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3 years ago

I need help SOMEONE PLZ HELP ME OUT WITH THIS !! THANK UU

Mathematics

1 answer:

Mama L [17]3 years ago

8 0

Answer:

since they are alternate exteriors, we put a equal sign

2x+78=5x+15

next we subtract 78 on both sides

2x+78-78=5x+15-78

2x=5x-63

then we subtract 5x on both sides

2x-5x=5x-5x-63

-3x=-63

after that we divide -3 on both sides

-3x/-3=-63/-3

and the answer is

x=21

Step-by-step explanation:

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A newsletter publisher believes that less than 49% of their readers own a laptop. For marketing purposes, a potential advertiser

Zepler [3.9K]

Answer:

The answer is "At the 0,10 level, there should be enough proof that the percentage is below 49%"

Step-by-step explanation:

Null and alternative hypothesis:

$H_0 :P \geq 0.49\\\\H_1:P$

Significance level: $\alpha = 0.10$

It is decided that the null hypothesis at the defined meaning level is rejected.

5 0

3 years ago

The scale used for a model of a kitchen is 1/4 in. = 1.5 ft. In the model,

fgiga [73]

Answer:

15ft by 18ft

Step-by-step explanation:

Start with 2.5 divided by .25

That equals 10

10 times 1.5 ,because we know it takes ten .25inches to equal 2.5 and 2.5, is the size of one of the sides.

10 time 1.5 is 15ft

3 divided by .25 is 12

using the same logic and math as stated above we know 3 x .25 equals 12 by 12 quarter inches to make 3 inches

12 x 1.5 Same logic as before

12 x 1.5 equals 18ft

The kitchen is 15ft by 18ft

4 0

3 years ago

2y - 7 = 35 <br> What does Y equal?

gogolik [260]

Y= 21
2y=35+7
2y=42
42 divided by 2 = 21

6 0

3 years ago

PLEASE HELP WILL GIVE BRAINILEST

tatiyna

Answer:

$\Huge\boxed{25.13ft^3}$

Step-by-step explanation:

Hello There!

It says the tree has a cone like structure

The formula for volume of a cone is

$V=\pi r^2\frac{h}{3}$

where r = radius and h = height

note it says to use 3.14 for pi

so given the dimensions all we have to do is plug in the values into the formula

$V=3.14*2^2*\frac{6}{3}\\2^2=4\\4*3.14=12.56\\\\\frac{6}{3} =2\\2*15.56=25.133$

Our last step is to round to the nearest foot

So we can conclude that the tree has a volume of 25.13ft³

7 0

3 years ago

Compare and order the numbers below from least to<br> greatest.<br> 4.6,2.8,,17,7

marishachu [46]

Answer:

2,4,6,7,8,17

Step-by-step explanation:

6 0

4 years ago

Read 2 more answers