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Elodia [21]
3 years ago
9

-5-(-2) please helpA -30 B30 C-1D1​

Mathematics
2 answers:
Alekssandra [29.7K]3 years ago
7 0

Answer:

Step-by-step explanation:

-3

boyakko [2]3 years ago
7 0

Answer:

b

Step-by-step explanation:

when I muiltply an and divide. if there are two negatives it makes a positive an if there jus one it's a negative

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Answer:

$9.50/hour

Step-by-step explanation:

All you need to do is 71.25/7.5 (money earned ÷ hours worked) to get 9.5!

5 0
3 years ago
I need some help, please help. I have been stuck on this for days.
dlinn [17]

Answer:

Angle CDE equals 155 degrees :D

Step-by-step explanation:

parallel lines

since the left angle is 57, angle BAE is also 57

180-57=123

right angle=90

115+90+123+57=385

540-385=155

thus, angle CDE equals 155 degrees

5 0
2 years ago
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PLEASE HELP<br><br> Determine which relation is a function.
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The answer is A a function looks like a side ways u 
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4 0
3 years ago
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Students who attend Washington Middle School are either in seventh or eighth grade. At the end of the first semester 25% of the
Irina18 [472]

Answer:

There are <u>1240</u> students who attended Washington Middle School.

Step-by-step explanation:

Given:

Students who attend Washington Middle School are either in seventh or eighth grade.

At the end of the first semester 25% of the students at Washington Middle School were on the honor roll.

Seventh graders represented 60% of the students on the honor roll.

If 124 students on the honor roll were in eighth grade.

Now, to find the students attend Washington Middle School.

Let the total number of students be x.

So, the students at Washington Middle School were on the honor roll:

<u><em>25% of </em></u>x<u><em /></u>

=\frac{25}{100} \times x

=\frac{25x}{100}

=\frac{x}{4}

As, given seventh graders represented 60% of the students.

So, the students on the honor roll represented as seventh graders:

60\%\ of\ \frac{x}{4}

=\frac{60}{100} \times \frac{x}{4}

=0.6\times \frac{x}{4}

=\frac{0.6x}{4}

As, 124 students on the honor roll were in eighth graders.

Thus,

According to question:

\frac{x}{4} -\frac{0.6x}{4} =124

\frac{x-0.6x}{4} =124

\frac{0.4x}{4} =124

<em>Multiplying both sides by 4 we get:</em>

0.4x=496

<em>Dividing both sides by 0.4 we get:</em>

x=1240.

Therefore, there are 1240 students who attended Washington Middle School.

6 0
4 years ago
How do i solve this? i don't understand parenthesis!
Crank
<span>Step 1: Simplify both sides of the equation.

</span>1/2 (6−z) = <span>z
</span><span>
(1/2) (6) + (1/2) (-z) = z (distribute)

3 + -1/2z = z

-1/2z + 3 = z

</span><span>Step 2: Subtract z from both sides.
</span><span>
-1/2z + 3 - z = z - z

-3/2z + 3 = 0

</span><span>Step 3: Subtract 3 from both sides.
</span><span>
-3/2z + 3 - 3 = 0 - 3

-3/2z = -3

</span><span>Step 4: Multiply both sides by 2/(-3).
</span><span>
(2/-3) * (-3/2z) = (2/-3) * (-3)

z = 2

Answer: z = 2

I hope this helps you!:) Sorry it took me so long!



</span>
6 0
4 years ago
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