Mathematics High School

help with question 1 plssssss

Answers

Answer 1

its answer comes in point

Step-by-step explanation:

3a+5a+12=90

8a=90-12

8a=78

a=78/8

a=9.75

if it is wrong than tell me plzzz

Related Questions

1. Karen had 15 Snicker Bars. She gave 7 to her brother. What percent did
she give away?

Answers

Answer:

46%

Step-by-step explanation:

Have a wonderful day/night!

Answer:

46.666666666667%

Step-by-step explanation:

Thats the percent she gave away

Please help me!!! Pick the correct answer choices!!!

Answers

Answer:

1.C

2.A

Step-by-step explanation:

hope this helps. {ps please give brainliest :)}

Solve :x^7/x^5+2x^4+x^3 × (x+1)^3/x^4

Answers

(2x^5+2x^3+3x^2+3x+1)/x

On a game show, Celine is given the digits from 1 to 6 and has to use them to fill in a row with 2 spots. If the number formed is the correct price of the item displayed, she wins the item. Given that each digit can be used only once, how many 2-digit prices are possible?

Answers

Answer:

30 Two digits prices are possible.

Step-by-step explanation:

Celine was given numbers from 1 to 6

so the possible numbers are 1, 2, 3, 4, 5, 6

And we need to make a two digit number using these digits by using them only once

Using the box method of permutation

We have 6 possibilities on the tenth place of the two digit numberOn the One's place we will have 5 choices of numbers as one among these six given digits is used on the tenth place (Non repeating)

So we will have total permutations = 6*5 = 30

Therefore 30 Two digits prices are possible.

Someone please help me make an equation for the first question! :)

Answers

12y + 1x
part b:
22y + 6x

A ball is dropped from a certain height. The table shows the rebound height of the ball after a series of bounces.

From what height, approximately, do you think the ball was dropped? Explain or show your reasoning.

Answers

Answer:

Step-by-step explanation:

becasue

Write an equation in slope-intercept form for the line with slope −3 and y-intercept 2.

Answers

Answer: Y= -3x+2 is how you would write it according to the slope-intercept formula Y=MX+B

Step-by-step explanation: M being your slope

And B being your Y-Intercept

Y=-3x+2..............

what are the angle measurements of the triangle??

Answers

180 degrees! It’s equal to all sides and has the supplementary measure

What is the missing y value in the table

Answers

Answer: 70.

Step-by-step explanation: You have to find the common factor, what one x equals to y, you can do that by dividing 35/5 which is 7. To find y, you have to do 7x10 = 70.

Answer:

it might be 70 or 75

Step-by-step explanation:

so yea

The entrance to our school has a height of 10.5 feet. There are
approximately 30.5 centimeters in 1 foot. What is the height of the
entrance in centimeters?

Answers

Answer:

Step-by-step explanation:

Height Calculator: predict a child's adult height with significant accuracy. You can estimate how tall you will be, or the adult height of your child or a child patient. Accepts metric and imperial units: inches, feet, cm, meters. Output (mature height) is in centimeters and feet and inches.

you have four 50 g weights, two 100 g weight, and one 250 g weight. How can you balance the scale. PLEASE HELP ASAP!!!! WILL MARK BRAINLIEST

Answers

Answer:

You put the 250-gram weight and one 50-gram weight on one side. Then you put the two 100-gram weights and two 50-gram weights on the other side. You leave the last 50-gram weight out of the equation.

Step-by-step explanation:

Feel free to give brainliest.

Have an extraordinary day!

Simplify the following
(X-5)2

Answers

Answer:

2x-10 by the distributive property of equality

If your solving for X it would be X=10

Which of the following is divisible by 5 but not 10 ? 230, 255, 260, 500

Answers

Answer:

255 -_-

Step-by-step explanation:

230 is divisible by both

260 is divisible by both

500 is definitely divisible by both

Just use your calc

if f(x) =3/4x+5/6 what is f(12)

Answers

Answer:

59/6

Step-by-step explanation:

Multiply 3/4 with 1212 x 3 will become 36 and divided by 4 is 99 + 5/6 cannot be added because they do not have the same denominator. Next you have to multiply 9/1 with 6/6 so that it has the same denominator as 5/6The problem will now become 5/6 + 54/6Now you can add the numerators and get the answerThe answer is59/6

A car wash detailed 256 cars in 8 hours. At what rate did the car wash detail
cars in cars per hour?
O A. 31 cars per hour
O B. 33 cars per hour
O C. 32 cars per hour
O D. 30 cars per hour

Answers

32 cars per hour. If you do 256 divided by 8 you get 32.

Hope this helped!

Cookies are on sale! Today each cookie costs $0.75 less than the normal price. Right now if you buy 7 of them it will only cost you $2.80!
Write an equation to determine the normal price of each cookie (c)
Find the normal price of each cookie.

Answers

Answer:

$1.35

Step-by-step explanation:

divide $2.80 by 7 ($0.40)then add $0.75 Which equals $1.35

Y’all I need it by today please

Find the equation of the quadratic function y = ax^2+ bx + c which
passes through the points (-1, 9), (2, 3), and (5, 15).

Answers

Answer:

y=(x-1.5)^2+2.75

Step-by-step explanation:

Hope I could help!

Which of the following equations is equivalent to 4x -y=3`?

Answers

Answer:

x-intercept = (3/4,0)

y'intercept = (0,-3)

Step-by-step explanation:

Not sure what conversion you need but here are the intercepts

Michelle is debating between two different mortgages for $184,000. She found a 20-year fixed rate loan at 7.05% and 15-year fixed rate loan at the same rate. How much more interest will she pay for the 20-year loan versus the 15-year loan?

Answers

9514 1404 393

Answer:

$45,081

Step-by-step explanation:

The amortization formula can be used to find the monthly payment.

A = P(r/12)/(1 -(1 +r/12)^(-12t))

For the 20-year loan with r=0.0705 and P=184,000, the monthly payment is ...

A = $1432.08

The total amount repaid will be ...

12×20×1432.08 = 343,699.20

For the 15-year loan with the same parameters, the monthly payment is ...

A = 1658.99

and the total amount repaid is ...

12×15×1658.99 = 298,618.20

The difference in these repayment amounts is the difference in interest charges:

343,699.20 -298,618.20 = 45,081

The 20-year loan will cost $45,081 more than the 15-year loan.

Pls help ASAP and pls explain someone:)

Answers

so we know the slope has to be -3 and the y intercept is 2. y intercept looks like (0,2). since we know this we automatically can rule out B since it has (0,0).

let’s find the slope of A
-9- -5
-3- - 1
the slope= -4/-2= 2
we know it’s not A because the slope is not -3

let’s find the slope of C
-17- -8
-5- -2
slope= -9/-3=3
we know it’s not C because the slope is not -3. we could directly assume that D is the answer no but we’ll still find the slope just to be sure

let’s find the slope of D
14-8
-4- -2
slope=6/-2= -3

the answer is D!!

Answer:

D is the answer

Sterling got money for his birthday. He spent half of his money on a coat, $74 on sneakers, $42 for a pair of shoes, and had $77 left after shopping. How much money did Sterling get for his birthday?

Answers

Answer:

$112

Step-by-step explanation:

x/2+42= 77

x/2 = 35

x=70

70+42= $112

If we already know that XY=WZ, which additional fact would prove that quadrilateral WXYZ is a parallelogram?

Answers

Answer:

WX=ZY would prove that the quadrilateral WXYZ is a parallelogram

Step-by-step explanation:

The additional fact that would prove that quadrilateral WXYZ is a parallelogram is '' XY = YZ''.

Given

If we already know that XY=WZ,

What is parallelogram?

A Parallelogram is a four-sided quadrilateral whose opposite sides are parallel and congruent to each other.

The opposite angles of a parallelogram are equal.

These bisectors intersect each other at 90 degrees.

And it means that they are perpendicular.

Since they are perpendicular, we find that there 4 congruent triangles, XY is parallel to WZ, and WX is parallel to YZ.

Additionally, opposite angles are equal.

These two latter findings are the characteristics of the parallelogram.

Hence, the additional fact that would prove that quadrilateral WXYZ is a parallelogram is '' XY = YZ''.

To know more about Parallelogram click the link given below.

https://brainly.com/question/10865912

can someone help me i would really appreciate you i dont understand this

Answers

Answer:

127 degrees

Step-by-step explanation:

If <1 is 53 degrees, then its vertical angle is also 53 degrees. Same side interior angles are supplementary which means they add up 180 degrees.

180 - 53 = 127

Help me ASAP pls on these both questions to make sure if I’m right

Answers

Answer:

question 6 is false, 5.4. question 7 is false, 4.6

Step-by-step explanation:

Add all the numbers together, then divide by how many number of values there are to get your answer.

Find the value of x

is this correct?

Answers

Answer:

Yes

Step-by-step explanation:

Answer:

yes

Step-by-step explanation:

3(x+2) = 24 (because it’s an isosceles so both sides are equal)

x+2 = 24/3

x +2 = 8

x = 8-2

x = 6

what should I do understand math better?

Answers

Answer:

U can join maths tution classes...✨✨

As someone who used to fail math and now has straight Cs (not the best but nti is really hard). It really helped me to talk to others about issues I had and ask questions it may not seem like a lot but it really helped me.

graph y=3/4x-4 ....……………

Answers

You graph the y-intercept first... The y-intercept is -4 so you go down four units on the y-axis that will be your first point (0,-4). The slope is 3/4 and can be translated as rise over run. rise is numerator run is denominator. From the -4 You rise three units up since its positive three, and then you run 4 units to the right since the 4 is positive. Your second point should be at (4,-1).

The required graph is shown below that represents equation y = (3/4)x - 4.

The equation y = (3/4)x - 4 represents a linear function in slope-intercept form, where the coefficient of x is the slope of the line and the constant term (-4) is the y-intercept.

To graph the equation y = (3/4)x - 4, follow these steps:

Start by plotting the point (0, -4) on the y-axis. This is the point where the line intersects the y-axis.

Since the slope is 3/4, it means that for every 4 units moved to the right along the x-axis, the corresponding y-value moves up 3 units.

From the y-intercept (0, -4), move 4 units to the right and then 3 units up to find another point. This gives us the point (4, -1).

The two points (0, -4) and (4, -1), draw a straight line passing through both points. This line represents the graph of the equation y = (3/4)x - 4.

Learn more about the graph of the equation here:

https://brainly.com/question/29169305

#SPJ6

4x - 4 < 8 AND 9x + 5 > 23

Answers

Answer:

- infinite 3 for the first one. x<3

x>2 ....2 infinite

Sally's job pays her $30 per hour.
If Sally works 6 hours, how much money would she earn?
I

Answers

180 $
I hope that helps

Answer:

$180

Step-by-step explanation:

If Sally's job is paying her $30 PER HOUR, and we know that she works 6 hours, you would need to find how to put those two numbers together to get how much total money she earns. Since she gets 30 dollars per hour, and she works 6 hours, this hints to us that it is a multiplication problem. So, we would do 30×6= 180.

Kevin gathered data from his classmates about the number of books they consulted and the total time they spent on a research paper. The scatter plot shows the data he gathered and the line of best fit.

The equation of the line of best fit is y = 70.28x + 425.77.

Based on the line of best fit, approximately how many minutes would a student who consults 3 books spend on a research paper?

211

372

496

637

Answers

The student who consults 3 books spends 637 minutes on a research paper based on the line of best fit if the equation of the line of best fit is y = 70.28x + 425.77 option (D) is correct.

What is the line of best fit?

A mathematical notion called the line of the best fit connects points spread throughout a graph. It's a type of linear regression that uses scatter data to figure out the best way to define the dots' relationship.

[tex]\rm m = \dfrac{n\sum xy-\sum x \sum y}{n\sum x^2 - (\sum x)^2}\\\\\\\rm c = \dfrac{\sum y -m \sum x}{n}[/tex]

We have:

Kevin gathered data from his classmates about the number of books they consulted and the total time they spent on a research paper.

The line of best fit is:

y = 70.28x + 425.77

Plug x = 3 in the line of best fit:

y = 70.28(3) + 425.77

y = 21.084 + 425.77

y = 636.61 minutes ≈ 637 minutes

Thus, the student who consults 3 books spends 637 minutes on a research paper based on the line of best fit if the equation of the line of best fit is y = 70.28x + 425.77 option (D) is correct.

Learn more about the line of best fit here:

brainly.com/question/14279419

#SPJ5

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