y = 7x + 19
-21 x 3y = 57

Answers

Answer 1

Answer:

x= -2 y= -5

Step-by-step explanation:


Related Questions

A 10 ft tall tent standing next to a woman
casts a 16 ft shadow. If the woman is 5 ft
tall, then how long is her shadow?

Answers

Answer:

8 ft

Step-by-step explanation:

Set up a proportion: 10/16=5/x

Solve for x: 80=10x

x=8

What property do we use when we find equivalent fractions?

Answers

Answer:

It's called the cross multiply rule. The rule is shown below: This formula says that if the numerator of one fraction times the denominator of the other fraction equals the denominator of the first fraction times the numerator of the second fraction, then the fractions are equivalent.

Step-by-step explanation:

All 5 students in Mrs.Awful’s class got 50 for the test For the next test, one of the students got 100 but the remaining students all got 50. What it the average grade in the class now?

Answers

Answer:

60

Explanation:

the formula for calculating the average grade would be the total score of all students ÷ the number of students. in this case, that would be:

(100 + 50 + 50 + 50 + 50) ÷ 5

= 300 ÷ 5

= 60

so, the average grade is 60.

i hope this helps! :D

Quiz
Your 6 year investment of $40.000 at 14% compounded yearly is worth how much now?
Round to the nearest hundredths.
A =

Answers

Need help to but can you mark Brainily

based on sample one, how many students from the entire student population preferred the 8:30 am start time​

Answers

It’s was uhhhhhh 18?

The balance on your ATM receipt is $93.72. You just wrote a check this morning for $12.57. What is your adjusted balance?

Answers

Answer:

$81.15

Step-by-step explanation:

Solve for x.

-5x = -10

Answers

Answer:

x=2

Step-by-step explanation:

divide -5 to both sides to isolate the x. two negatives make a positive therefore x=2.

i hope this helps :)

Answer:

2

Step-by-step explanation:

-10 divided by -5 is 2. Therefore, x=2.

HELP NOW PLEASE

Which expression is equivalent to -12(3x - 3/4)?
-36x - 8
-36x + 8
-36x - 9
-36x + 9

Answers

Answer:

-36x+9

Step-by-step explanation:

so for this question they want you to simplify the expression and to do that you distribute -12 to what is in the parenthesis

-12x3x=-36x

-12x-3/4=9

so the answer is -36x+9

have a great day :D

Kayla bought seven boxes. A week later, half of all her boxes were destroyed in
a fire. There are now only 22 boxes left. With how many did she start? Show your work.

Answers

Answer:

Let's call the number of boxes Maria started with:

There are 37 boxes

Step-by-step explanation:

Let's call the number of boxes Kayla started with:

Then we can write:

22

=

b

+

7

2

Where:

22

is the number of boxes Kayla has left.

(

b

+

7

)

is the number of boxes Kayla started with plus the

7

she bought

The division by

2

represents

1

2

of the total boxes Kayla had being destroyed by fire.

We can solve this by first multiplying each side of the equation by

2

to eliminate the fraction while keeping the equation balanced:

2

×

22

=

2

×

b

+

7

2

44

=

2

×

b

+

7

2

44

=

b

+

7

Now, subtract

7

from each side of the equation to solve for

b

while keeping the equation balanced:

44

7

=

b

+

7

7

37

=

b

+

0

37

=

b

b

=

37

Kayla started out with 37 boxes.

If x=7 then which answers would I circle? A. X + 7 = 17 b. 7 = 17 - x c. 70 = 10x d. X/35 = 5 e. 15x = 105

Answers

Answer:

C. 70 = 10x

E. 15x = 105

Step-by-step explanation:

x = 7

Using method of elimination;

A. X + 7 = 17

Substituting the value of x;

7 + 7 ≠ 17 (Incorrect option)

B. 7 = 17 - x

Substituting the value of x;

7 ≠ 17 - 7  (Incorrect option)

C. 70 = 10x

Substituting the value of x;

70 = 10 * 7  (Correct option)

D. X/35 = 5

Substituting the value of x;

7 / 35 ≠ 5  (Incorrect option)

E. 15x = 105

Substituting the value of x;

15 * 7 = 105  (Correct option)

A blank expression like (3+5)x(4-1) is a combination of numbers and least one operation

Answers

Answer:

Hey the answer is = 24x

Step-by-step explanation:

An algebraic expression comprises both numbers and variables together with at least one arithmetic operation. To evaluate an algebraic expression you have to substitute each variable with a number and perform the operations included.

HOPE THIS HELPS!

The given numerical expression is simplified to 24.

What is PEDMAS rule?

PEMDAS is an acronym used to mention the order of operations to be followed while solving expressions having multiple operations. PEMDAS stands for P- Parentheses, E- Exponents, M- Multiplication, D- Division, A- Addition, and S- Subtraction.

The given numerical expression is (3+5)×(4-1).

Solve Parentheses first, that is

8×3

=24

Therefore, the given numerical expression is simplified to 24.

Learn more about the PEDMAS rule here:

https://brainly.com/question/24086845.

#SPJ2

Sorry I need this answered again because a spammer answered it the first time :/

The circulatory system helps provide energy to the body when it
A. Carries wastes to the liver and kidneys
B.carries carbon dioxide to the lungs
C.carries oxygen and nutrients to the muscles
D.carries hormones through the bloodstream

Answers

Answer:

C

Step-by-step explanation:

p which- x2+8x+p=0 will have equal roots​

Answers

Answer:

The correct answer is the 162xsquare

Given f(X) = 4x^4+5x - 15x² - 45, find f(-3).

Answers

Answer:

i think the answer is 174

Consider JKL and MNO
Which piece of information can be used to prove that AJKL - AMNO ?

Answers

angle K = angle N
Hypotenuse-Angle Theorem (HA)

After 3 hours of steady snowfall, Rhianna measures how much snow is in her driveway. She finds there is 1/2 of an inch of snow. How many inches of snow fell each hour?

Answers

Answer:

1/6 inch per hour

Step-by-step explanation:

1/2 ÷3= 1/6

A scale model of the Washington Monument is 15 inches tall and the base is 1.5 inches wide. If the actual monument is approximately 555 feet tall, which is closest to the width, in feet, of the base?

Answers

its fake the guy linky

neeed help againnnnnn

Answers

Answer:

look at the picture i sent............

What is the solution to the system graphed below? ​

Answers

Answer:

The solution is (-4,-1)

Step-by-step explanation:

The solution to the system is where the two graphs intersect.

The lines intersect at x = -4 and y = -1

The solution is (-4,-1)

If ∠ A and ∠ B are supplementary angles and ∠ A is seventeen times as large as ∠ ​B, find the measures of ∠ A and ∠ B.

Answers

supplementary angles = 180°

A : B

17 : 1

170 : 10

Zoom in giving 5 stars to right answer

Answers

Answer:

Can u take a better picture?

ADC is a triangle.

AED and ABC are straight lines.

EB is parallel to DC.

Angle EBC=148°

Angle ADC=63°

Work out the size of angle EAB.

You must give a reason for each stage of your working out.

Answers

Answer:

[tex]\angle EAB = 85[/tex]

Step-by-step explanation:

Given

[tex]\angle EBC = 148[/tex]

[tex]\angle ADC = 63[/tex]

See attachment for triangle

Required

Find EAB

[tex]\angle AEB = \angle ADC = 63[/tex]  --- corresponding angles

[tex]\angle ABE + \angle EBC = 180[/tex] --- angle on a straight line

So:

[tex]\angle ABE + 148 = 180[/tex]

This gives:

[tex]\angle ABE =- 148 + 180[/tex]

[tex]\angle ABE =32[/tex]

Considering: [tex]\triangle ABE[/tex]

[tex]\angle ABE +\angle AEB +\angle EAB = 180[/tex] --- angles ina triangle

So:

[tex]32 +63+\angle EAB = 180[/tex]

[tex]95+\angle EAB = 180[/tex]

Collect like terms

[tex]\angle EAB = 180-95[/tex]

[tex]\angle EAB = 85[/tex]

how much short of 2 metres to 107cm​

Answers

Answer: 93 centimeters

Step-by-step explanation:  Its 93 cm because 2 metres is equivalent 200 cm, so 200-107= 93.

Can someone helpppp plssss

Answers

Answer:

angleQ+angleR is 180degrees because of the properties of isoceles trapezoid. So, if you set equation and solve, you'll get the fact that x is 12, and angleR is 130degrees, and angleQ is 50degrees. According to the properties of isoceles trapezoid, angleQ is the same as angleT. So, angleT is 50degrees

Answer:

Step-by-step explanation:

Each side of a square is 3inches long.a student increases the length of each side by 3inches.the are of the new Square is how many times the area of original square?
A=2
B-3
C=4
D=a

Answers

The answer is Letter B

Missing leg of 75 and 60

Answers

Answer:

huh?

Step-by-step explanation:

Is this a question or what??

Which r-value suggests a weak negative correlation?
A. r = 0.13475
B. r = 0.95768
C. r = -0.13475
D. r = -0.95768

Answers

Answer:

r = -0.13475

Step-by-step explanation:

Here, we want to select a value for a weak negative correlation

When a correlation is week, its value is usually less than -0.5

In this case, we have our correct answer as r = -0.13475

PLEASE HELP WILL GIVE BRAINLIEST IF CORRECT

Let y = 2t+ 5 be a linear function representing the distance
from home for an ant t minutes after starting out from a
location near its home. What does the number 2 represent in
this function?
O A. The ant is 2 feet from its home after t minutes.
O B. The ant is moving 2 feet every 5 minutes.
O C. The ant is crawling at 2 feet per minute.
O D. The ant started out 2 feet from its home.

Answers

It’s c

Because it’s the rate of change

This year Adeele paid £465 for her car insurance. This is an increase of 20% on last year's payment. How much did Adele pay last year?

Answers

Answer:

Insurance cost (last year)= £387.5

Step-by-step explanation:

Giving the following information:

Insurance cost= £465

Increase growth rate= 20% = 0.2

To calculate the cost of insurance last year, we need to use the following formula:

Insurance cost (last year)= insurance cost / (1 + insurance growth rate)

Insurance cost (last year)= 465 / (1 + 0.2)

Insurance cost (last year)= £387.5

The amount that Adele pay last year was:£387.5.

Car insurance:

Using this formula

Amount paid= Insurance cost / (1 + Insurance growth rate percentage)

Where:

Insurance cost= £465

Increase growth rate percentage=20% or 0.20

Let plug in the formula

Amount paid= £465 / (1 + 0.20)

Amount paid= £465/1.20

Amount paid= £387.5

Inconclusion the amount that Adele pay last year was:£387.5.

Learn more about insurance here:https://brainly.com/question/25855858

CAN SOMEONE PLEASE ANSWER THE FOLLOWING IT URGENT

Answers

Answer:

See bolded below.

Step-by-step explanation:

As you said, you only need help with no. 2:

a) Check the attachments for the lines

b) The equations are, respectively:

y = -4x + 1 [intersects parabola at 1 point]

Check:

[tex]\begin{bmatrix}y=\left(x-2\right)^2-3\\ y=-4x+1\end{bmatrix}[/tex]

[tex]\begin{bmatrix}-4x+1=\left(x-2\right)^2-3\end{bmatrix}[/tex]

[tex]\begin{bmatrix}-4x+1=x^2-4x+1\end{bmatrix}[/tex]

[tex]x^2=0, x = 0[/tex]

[tex]y=-4\cdot \:0+1 = 1[/tex]

[tex]y=1,\:x=0[/tex]

The point of intersection would be (0, 1)

y = -4x + 3 [intersects parabola at 2 points]

Check:

[tex]\begin{bmatrix}y=\left(x-2\right)^2-3\\ y=-4x+3\end{bmatrix}[/tex]

Subtract the 2 equations,

[tex]y=\left(x-2\right)^2-3\\-\\\underline{y=-4x+3}\\y-y=\left(x-2\right)^2-3-\left(-4x+3\right),\\0=x^2-2\\x = \sqrt{2}, x = - \sqrt{2} \\\\\mathrm{Plug\:the\:solutions\:}x=\sqrt{2},\:x=-\sqrt{2}\mathrm{\:into\:}y=\left(x-2\right)^2-3[/tex]

[tex]\begin{pmatrix}x=\sqrt{2},\:&y=3-4\sqrt{2}\\ x=-\sqrt{2},\:&y=3+4\sqrt{2}\end{pmatrix}[/tex]

Therefore the points of intersection are (√2, 3-4√2) and (-√2, 3+4√2) respectively

And finally we have the equation y = - 4x. It doesn't intersect the parabola.

c) The y-intercepts of such graphs are all less than or equal to 0.

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