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Korolek [52]
4 years ago
13

Jean surveyed 25% of all the eighth graders and 75% of all the seventh graders at her school. Keisha surveyed 50% of all the eig

hth graders and 50% of all the seventh graders at the same school. ●Jean surveyed a total of 152 students. ●Keisha surveyed a total of 144 students. What is the number of eighth graders at Jean and Keisha’s school? A) 110 B) 128 C) 160 D) 186
Mathematics
1 answer:
Alexeev081 [22]4 years ago
3 0
I think it is B maybe. I hope it works!!! plz tell me if it did or not bye!!!
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What is the y-intercept of the line 3x-4y=24
Contact [7]

Answer:

(0,-6)

Step-by-step explanation:

3x-4y=24

To find the y intercept, let x =0 and solve for y

3(0) -4y =24

-4y =24

Divide by -4

-4y/-4 = 24/-4

y = -6

The y intercept is

(0,-6)

5 0
3 years ago
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What is -3/4+ 3 1/4 x 1 1/5
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3 years ago
What is the simplified form of the following expression?
kogti [31]

Answer:

\sqrt{3}


Step-by-step explanation:

We will be using 2 properties of radicals in this simplification (outlined below).

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<em>Let's simplify this:</em>

2\sqrt{27} +\sqrt{12} -3\sqrt{3}-2\sqrt{12}\\ =2\sqrt{9*3}+\sqrt{4*3} -3\sqrt{3}-2\sqrt{4*3} \\=2\sqrt{9} \sqrt{3} +\sqrt{4} \sqrt{3}-3\sqrt{3}-2\sqrt{4} \sqrt{3} \\=2(3)\sqrt{3}+(2)\sqrt{3} -3\sqrt{3}-2(2)\sqrt{3} \\ =6\sqrt{3} +2\sqrt{3}-3\sqrt{3}-4\sqrt{3}  \\=\sqrt{3}


First answer choice is right.

5 0
4 years ago
What is the vertical height, h?
bixtya [17]

Answer:

<h2>             6.2</h2>

Step-by-step explanation:

s = 10 so ¹/₂s = 5

Pythagorean theorem:

h^2+(\frac12s)^2=8^2\\\\h^2+5^2=8^2\\\\h^2=64-25\\\\h^2=39\\\\h=\sqrt{39}=6.2449979....\approx6.2

8 0
3 years ago
Use the Commutative Property to write an expression equivalent to –5d + 12.
sergiy2304 [10]

Step-by-step explanation:

\huge\bold\purple{   equivalent\: of \: -10d+24   }

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3 years ago
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