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tester [92]
3 years ago
10

Which expression is equivalent to -2 - 7 -2 - (-7) 2 - 7 -2 + (-7) 2+7

Mathematics
2 answers:
andrew11 [14]3 years ago
8 0

Answer:

-2+ (-7) = -2 - 7

Step-by-step explanation:

Lunna [17]3 years ago
7 0

Answer:

Step-by-step explanation:

-2+ (-7) = -2 - 7

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What is the value of -5 to the 4th power? <br><br> A) 20<br> B) 625<br> C) 125<br> D) -625
Yanka [14]

Answer:

B) 625

Step-by-step explanation:

(-5)^4

-5*-5*-5*-5

25*25

625

3 0
4 years ago
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dangina [55]
Parallel means lines that never meet, and perpendicular are lines that meet at right angles.

5 0
3 years ago
Stanley has a collection of seashells. He found 35% of his collection on Florida beaches. If Stanley has 49 seashells from Flori
m_a_m_a [10]

Answer:

The number of seashells he have in his collection all together is <u>140</u>.

Step-by-step explanation:

Given:

Stanley has a collection of seashells. He found 35% of his collection on Florida beaches.

Stanley has 49 seashells from Florida.

Now, to find the number of seashells of his collection altogether.

Let the number of seashells all together be x.

Percentage of seashells found on Florida beaches = 35%.

Number of seashells found on Florida beaches = 49.

Now, to get the number of seashells altogether we put an equation:

35\%\ of\ x=49.

⇒ \frac{35}{100} \times x=49

⇒ 0.35\times x=49

⇒ 0.35x=49

Dividing both sides by 0.35 we get:

⇒ x=140.

Therefore, the number of seashells he have in his collection all together is 140.

4 0
3 years ago
The thousand islands are located along the border between new york and canada. the adventure club wants to place a stone marker
Nikitich [7]

Using proportions, it is found that the number of islands that each member will have to visit is given by:

c. 19 islands.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

In this problem, there are 684 islands, and 36 members, hence the number of islands per member is given by:

n = 684/36 = 19.

Which means that option c is correct.

More can be learned about proportions at brainly.com/question/24372153

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8 0
2 years ago
8x plus 8y equals 8. 8x plus 2y equals 28. Find x and y
alukav5142 [94]

Answer:

x,y = 13/3, -10/3

Step-by-step explanation:

8x+8y=8

8x+2y=28  Subtract eq1 by eq 2

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y=-20/6 y = -10/3

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8x=34 2/3

x=4 1/3

x=13/3

Hope this helps plz hit the crown :D

6 0
3 years ago
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