Answer:
A
Step-by-step explanation:
Equation
2x + 3x + 8 + 7x - 2 = 90
Solution
Combine like terms on the left
12x + 6 = 90 Subtract 6 on both sides
12x = 90 - 6
12x = 84 Divide by 12
x = 84/12
x = 7
• (1,7)
- 10
(0,0)
10
D
A. y = 7x
O B. y = 3x
O C. y = 21x
OD. y=-3x
O E. Y= 1/5x
O E y = -7x
A random sample of 900 13- to 17-year-olds found that 411 had a computer in their room with Internet access. Let p be the proportion of all teens in this age range who have a computer in their room with Internet access.Suppose you wished to see if the majority of teens in this age range have a computer in their room with Internet access. To do this, you test the hypotheses
H0: p = 0.50 vs HA : p≠0.50
The test statistic for this test is:_______.
a. 1.96
b. 2.60
c. 27.50
d. 2.59424
Answer:
The test statistic for this test is: z = -2.60, option b.
Step-by-step explanation:
The test statistic is:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis, [tex]\sigma[/tex] is the standard deviation and n is the size of the sample.
H0: p = 0.50 vs HA : p≠0.50
This means that [tex]\mu = 0.5, \sigma = \sqrt{0.5*0.5} = 0.5[/tex]
A random sample of 900 13- to 17-year-olds found that 411 had a computer in their room with Internet access.
This means that [tex]n = 900, X = \frac{411}{900} = 0.4567[/tex]
Value of the test-statistic:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
[tex]z = \frac{0.4567 - 0.5}{\frac{0.5}{\sqrt{900}}}[/tex]
[tex]z = -2.598[/tex]
The test statistic for this test is: z = -2.60, option b(should be).
find the cost of fencing a rectangular field 250m long and 130m wide at rupees 30 per meter
Answer:
length of rectangular =250m
breath =130m
perimeter of rectangular field =(130*250)
=32500m
cost of fencing a rectangular field at the rate of 30 per meter
cost of the rectangular field =32500*30
=rupees 975000
hope it helps
PLEASE HELP THIS IS DUE TODAY
rearrange the parallelogram as a rectangle. Then find the area.
ILL GIVE BRAINLIEST PLS HELP DUE SOON!
Answer:
area of shaded portion = 30.5 cm²
Step-by-step explanation:
area of circle = πr² = (3.14)(5²) = 78.5 cm²
area of rectangle = L x W = 8 x 6 = 48 cm²
78.5 - 48 = 30.5 cm²
17
11
S
3
18
If the median is 17, which number could s be?
7
18
Answer:
s=18
Step-by-step explanation:
the median is 17(middle number)
It goes from smaller to bigger
2 numbers onthe left of 17 and 2 numbers on the right of 17
3 11 17 18 18
Answer:
it would be 18
Step-by-step explanation:
18 being the answer makes 17 the middle it has to be more than 17 and it is 18
What is the missing number?
Answer:
12
Step-by-step explanation:
The missing number is the y-intercept (b) of the table of values given.
Since we already know from the equation that the slope (m) = -³/2, therefore to find y-intercept (b) substitute the coordinates of a pair of value, say (x, y) = (4, 6), and m = -³/2 into y = mx + b
Thus,
6 = -³/2(4) + b
6 = -6 + b
6 + 6 = b
b = 12
The missing number is 12.
Which will give you:
[tex] y = -\frac{3}{2}x + 12 [/tex]
Anyone know how to answer this math question
Answer:
[tex](x+1)^2+(y-5)^2=36[/tex]
Step-by-step explanation:
The standard form equation for a circle is [tex](x-h)^2+(y-k)^2=r^2[/tex] where
(h, k) is the center and r is the radius.
Match up the point (-1, 5) with (h, k) to see that h = -1 and k = 5.
x - h = x - (-1) = x + 1
y - k = y - 5
[tex](x+1)^2+(y-5)^2=36[/tex]
Yesterday, a movie theater sold 269 bags of popcorn. A large bag of popcorn costs $4. A small bag of popcorn costs $1. In all the movie theater made $494 from
popcom sales. Write and solve a system of equations to find how many bags of each size of popcorn were sold.
The movie theater sold large bags of popcorn and small bags of popcorn.
Answer:
S=194, L=75 L+S=269, 4L+1S=$494
Step-by-step explanation:
HELPPP 30PTS FOR THIS
Answer:
pucha no se
Step-by-step explanation:
Answer:0.08
Step-by-step explanation:4756454434232
whats 3/10 out of 140?
Answer:
you have got your mark in fraction.
Answer: the answer is 42.
Step-by-step explanation:
This is how you solve.
Take 140 and divide by 10.
You would get 14.
then, times 14 by 3 or add it 3 times.
14+14+14 is equal to 42.
hope This helped!
89.5, 71, 75, 76, 74, 87, 89, 71, 85
mode = ?
Answer:
mode of this question is 71
Answer:
71
Step-by-step explanation:
because mode is the number that occurs most frequently
Please explain step by step I dont get it.
Answer:
B
Step-by-step explanation:
minus 3 twice
-3 times 2
Answer:
B (-3 x 2)
Step-by-step explanation:
Think about it like simple multiplication. On the number line, there are two groups of 3, except the integer is actually negative. It's about the same though.
A sofa can ve purchased for 890.00 cash or by making 12 monthly payments of 92.00. How much would be saved by paying cash?
Answer: $214
Step-by-step explanation:
First find how much you would have to pay if you payed $92 for 12 months. It would be 1104 (12 times 92)
Then you have to substract how much it would cot to pay by cash rather than paying $92 for 12 months. ( 1104-890 = 214)
Your answer is $214. You would save $214 if you pay by cash.
I hope this helps! May God bless you! :)
Jennifer. Wants to wrap her Mother’s Day present in pink wrapping paper the wrapping paper cost $0.09 per square inch. How much will it cost her to wrap the present
3/10 of the beads in a jar are red, the rest are blue if there are 500 more blue beads than red, how many beads are together?
Answer:hope it helps.
Step-by-step explanation:
plzz help for brainly
Answer:first one
Step-by-step explanation:
Please answer if you are SURE.
Answer Step-by-step explanation:
2x-7
-14
3x
2+7
The normal rainfall in September for Denver is 1.24 inches. The normal rainfall for Miami in September is 7.63 inches. The normal rainfall in January for Miami is 2.01 inches. The normal rainfall in January for Denver is 6.91 inches.
To the nearest tenth of an inch, how much more rain does Miami get in September than it gets in January?
Answer:
5.60 inches
Step-by-step explanation:
7.63 - 2.01 = 5.62
5.62 ≈ 5.6
Tell me if there is any missing information in the question because the information for Denver seems useless and there probably something missing
Stacia buys 6 yards of ribbon to make a costume. She has 2 feet of ribbons left over. How many feet of ribbon did Stacia use to make the costume? Explain your work.
ANSWER WITH WORDS
Answer:
16 feet
Step-by-step explanation:
6 yards of ribbon = 6 x 3 =18 feet
ribbon used = 18 -2 = 16 feet
what is the range of the function in this table
Answer:
B
Step-by-step explanation:
RANGE are the Y values
Answer:
b
Step-by-step explanation:
1. The parent function f(x) = x2 was
transformed to create the graph shown below.
x
Which function best represents the
transformation?
A f(x) = 3x2 - 1
B f(x) - 3x +1
c/(x) = $x-1
D) = -1 - 3
In triangle ABC, m∠A=(2x)∘, m∠B=(3x+1)∘, and m∠C=(3x−5)∘.
What is the value of x?
Answer:
x=16
Step-by-step explanation:
8x-4=180
8x=184
x= 16
Please could somebody help me on this one
Answer:
49π
Step-by-step explanation:
Are of the circle equal π[tex]r^{2}[/tex] (where π is pi and "r" is the radius). Radius equals the diameter divided by 2. Therefore the area of this circle equals...
[tex](14 / 2)^{2}[/tex]π = [tex]7^{2}[/tex]π = 49π
Jim and Jabu join a gym. Jim's gym take R150 deposit,and he pays R120 monthly. Jabu's gym takes no deposit, but his monthly payment is R150. They compare their total payments after four months, after five months and after six months.
3.1 Reasoning
3.2 Number sentence
Answer:
What should I answer?
Step-by-step explanation:
Jim's payment is more than Jabu's after four months and Jabu's payment is more than Jim’s after five months.
It is given that Jim’s gym takes a deposit of 150 and a monthly charge of 120.
Let x be the number of months for which both are paying the charges.
Then, Jim's total charge=150+120x.
Now, Jabu’s gym takes no deposit and takes a monthly charge of 150.
Jabu’s gym total charge=150x
Substitute x=4 in the obtained expression to determine the total payment of both after four months.
Jim's total charge=150+120(4)
=150+480
=620
Jabu’s gym total charge=150(4)
=600
So, Jim's payment is more than Jabu after four months.
Substitute x=5 in the obtained expression to determine the total payment of both after five months.
Jim's total charge=150+120(5)
=150+600
=750
Jabu’s gym total charge=150(5)
=750
So, Jabu's payment is more than Jim’s after five months.
Therefore, Jim's payment is more than Jabu's after four months and Jabu's payment is equal to Jim’s after five months.
To learn more about the deposit visit:
https://brainly.com/question/22697743.
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find the 12th term of the geometric sequence show below x^2, -2x^6, 4x^10
A car park has 20 vehicles 12 of them are cars.what fraction of the vehicles are cars?
Suppose there are n people on a bus. At the next stop, 9 more people get on the bus. No one gets of the bus. Draw a bar diagram to model the number of people now on the bus. Use this model to write an algebraic expression for the number of the people now on the bus.
Answer:
Algebaric Expression & Bar Diagram graphic representation of number of people in bus.
Step-by-step explanation:
No. of people on bus = n
After 9 more boarding & no one deboarding the bus , no. of people = n + 9
Bar diagrams is graphical method for presentation of data. Presenting the given in bar diagram :
There are 8 people seated, equally spaced, along a counter. If each person has 1 3/8 feet of counter space, how long is the counter?
Answer:
8+(13-8)=13 pls Point pls
4. Which of the following describes all the solutions of -4x + 2y > 12 when y = 4?
A x < -1
B X > -1
CX-3
D x < 3
Answer:
Option B is correct
Step-by-step explanation:
Given data
We are given the expression
-4x + 2y > 12
We want to substitute y=4 into the expression
-4x + 2(4) > 12
-4x + 8 > 12
-4x> 12-8
-4x> 4
divide both sides by -4
x> 4/-4
x>-1
Hence option B is correct