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3 years ago

I NEED HELP FAST PLS HELP

Mathematics

1 answer:

netineya [11]3 years ago

7 0

Answer: c

they can all be multipled by 5

Step-by-step explanation:

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Given the system of equations, what is the solution? x + 2y = 7 x - 2y = -1

Reika [66]

Add the 2 equations to eliminate the 2y. We get

2x = 6

x = 3

Plug x = 3 into the first equation:-

3 + 2y = 7
2y = 7 - 3 = 4

y = 2

Answer is x = 3 and y = 2

4 0

3 years ago

Find the equation of a line through (2,-4) and (-7,-4)

steposvetlana [31]

---------------------------------------------
Find slope :
---------------------------------------------
$\text {Slope = } \dfrac{-4 - (-4)}{-7-2} = \dfrac{0}{-9} = 0$

When the slope is 0, the graph is a horizontal line.

Equation of the graph is y = -4

------------------------------------------------------
Answer: y = -4
------------------------------------------------------

3 0

3 years ago

Problem type join results unknown

Allisa [31]

Not sure what you are asking for, but,

Here is an example of a JRU (Join Result Unknown) word problem:

There were _____ kids on the playground. ____ more kids came onto the playground. How many kids are on the playground?

Here is an example of a JCU (Join Change Unknown) word problem:

There were ____ kids on the playground. Some more kids came on the playground. Now there are ____ kids on the playground. How many kids came on the playground?

Here is an example of a JSU (Join Start Unknown) word problem:

Some kids were on the playground. ____ kids came on the playground. Now there are ____ kids on the playground. How many kids were on the playground at the beginning?

8 0

3 years ago

What is the area of the composite shape? A.14 B.24 C.36 D.68

lyudmila [28]

Answer:

Step-by-step explanation:

The top part is 4.5 inches and teh bottom is 27 so it is 36

6 0

3 years ago

The top-selling Red and Voss tire is rated 50,000 miles, which means nothing. In fact, the distance the tires can run until they

Anvisha [2.4K]

Answer: 0.9726

Step-by-step explanation:

Let x be the random variable that represents the distance the tires can run until they wear out.

Given : The top-selling Red and Voss tire is rated 50,000 miles, which means nothing. In fact, the distance the tires can run until they wear out is a normally distributed random variable with a $\mu=$ 67,000 miles and a $\sigma=$ 5,200 miles.

Then , the probability that a tire wears out before 60,000 miles :

$P(x$ [using p-value table for z]

Hence, the probability that a tire wears out before 60,000 miles= 0.9726

8 0

3 years ago