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Masteriza [31]
3 years ago
7

In a sample of students, 12 out of 24 students in a class wanted a sandwich for lunch. Using the data from the sample, predict h

ow many students would want sandwiches for lunch in a school of 400.
A 200
B 250
C 300
D 100
Mathematics
1 answer:
natka813 [3]3 years ago
8 0

Answer:

200

Step-by-step explanation:

good luck :)

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I need help (–
ExtremeBDS [4]

Answer:

69

Step-by-step explanation:

5(

–

q+6)=

–

20

5q–30=

–

20

Add -5 to both sides

Subtract -5 from both sides

Multiply both sides by -5

Divide both sides by -5

Apply the distributive property

5q=

Add 30 to both sides

q=

Divide both sides by 5 would be 69

6 0
3 years ago
How would you describe a carton back and hold 1000 unit cubes that measures 1" x 1" x 1" by using a unit can you
alexira [117]
Volume of the carton = 1000 cubic inches. Dimensions of a carton are 10"×10"×10"
4 0
3 years ago
Use the formula h(t)=−16t2+v0t+h0 , where v0 is the initial velocity and h0 is the initial height. How long will it take for the
Rama09 [41]

<em><u>Question:</u></em>

Britney throws an object straight up into the air with an initial velocity of 27 ft/s from a platform that is 10 ft above the ground. Use the formula h(t)=−16t2+v0t+h0 , where v0 is the initial velocity and h0 is the initial height. How long will it take for the object to hit the ground?

1s   2s   3s   4s

<em><u>Answer:</u></em>

It takes 2 seconds for object to hit the ground

<em><u>Solution:</u></em>

<em><u>The given equation is:</u></em>

h(t) = -16t^2 + v_0t+h_0

Initial velocity = 27 feet/sec

h_0 = 10\ feet

Therefore,

h(t) = -16t^2 +27t+10

At the point the object hits the ground, h(t) = 0

-16t^2 +27t+10 = 0\\\\16t^2-27t-10=0

Solve by quadratic formula,

\mathrm{For\:a\:quadratic\:equation\:of\:the\:form\:}ax^2+bx+c=0\mathrm{\:the\:solutions\:are\:}\\\\x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}\\\\\mathrm{For\:}\quad a=16,\:b=-27,\:c=-10:\quad \\\\t=\frac{-\left(-27\right)\pm \sqrt{\left(-27\right)^2-4\cdot \:16\left(-10\right)}}{2\cdot \:16}\\\\t = \frac{27 \pm \sqrt{1369}}{32}\\\\t = \frac{27 \pm 37}{32}\\\\We\ have\ two\ solutions\\\\t = \frac{27+37}{32}\\\\t = \frac{64}{32}\\\\t = 2\\\\And\\\\t = \frac{27-37}{32}\\\\t = -0.3125

Ignore, negative value

Thus, it takes 2 seconds for object to hit the ground

7 0
3 years ago
- 16 = -4(-5+ i)<br> Please help i can’t fail this test
Simora [160]

<em>Answer: i=9</em>

<em />

<em>Step-by-step explanation:</em>

<em>-16=-4(-5+i)</em>

<em>-16=20-4i</em>

<em>-20 -20</em>

<em>-36=-4i</em>

<em>Divide by -4 </em>

<em>i=9</em>

7 0
2 years ago
Read 2 more answers
Write an equivalent expression to 3^2/3 • 8√ 3^4
Free_Kalibri [48]

Answer:

I do not know

Step-by-step explanation:

6 0
2 years ago
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