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3 years ago

PLEASE HELP ME I need help so please help me

Mathematics

2 answers:

Y_Kistochka [10]3 years ago

8 0

Answer:

2/7

Step-by-step explanation:

This is because the slope is positive so that gets rid of both of the negatives, and the line is not straight but if the line was horizontally straight then your slope would be zero. So I just did process of elimination.

Anastaziya [24]3 years ago

4 0

Answer:

The answer is -2/7

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Is ½y=1 a linear equation

masha68 [24]

Answer:

yes it

Step-by-step explanation:

1/2y=1

y=1 x 2 (because e do to multiply the one by 2/1 to get y alone)

y=2 ( if y is always equal to two there is no variation meaning it is linear)

8 0

3 years ago

Janice wants to create a test containing 20 questions worth 50 points. If Janice creates questions worth either two points or fo

Elena L [17]

Answer:

15 two-point questions and 5 four-point questions.

Step-by-step explanation:

Let x represent number of two-points questions and y represent number of four-points questions.

We have been given that Janice wants to create a test containing 20 questions. We can represent this information in an equation as:

$x+y=20...(1)$

Since all questions are worth 50 points. We can represent this information in an equation as:

$2x+4y=50...(2)$

From equation (1), we will get:

$x=20-y$

Upon substituting this value in equation (2), we will get:

$2(20-y)+4y=50$

$40-2y+4y=50$

$40+2y=50$

$40-40+2y=50-40$

$2y=10$

$\frac{2y}{2}=\frac{10}{2}$

$y=5$

Therefore, there are 5 questions that are worth 4 points each.

Now, we will substitute $y=5$ in equation (1) to solve for x.

$x+5=20$

$x+5-5=20-5$

$x=15$

Therefore, there are 15 questions that are worth 2 points each.

3 0

3 years ago

A store selling school supplies advertises a bundle deal . The consumer can pick a backpack , a binder , a pack of pencils , and

siniylev [52]

6 × 4 × 5 × 2 = 240 different possible bundles

Knowledge point:

The Product Rule: If there are n ways to do A and m ways to do B, then the number of ways to do A and B is n × m

I.e. to get the amount of different bundles, all the relevant amount of options for each category must be multiplied by each other.

4 0

2 years ago

*PICTURE ATTACHED* please help

KIM [24]

Answer:

Step-by-step explanation:

10^0=1

10^-3 = 1/10^3

4.0=4

so : 1.72×10^0/4.0×10^-3 = (1.72× 10^3)/4 =430

scientific notation is : 4.30× 10^2

4 0

3 years ago

In the picture below a speaker is emitting a sound toward a solid barrier with a gap in it. Diagram and label the two types of w

mojhsa [17]

Answer: sound waves and mechanical waves or mechanical energy

Step-by-step explanation:

5 0

4 years ago