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Sindrei [870]
3 years ago
13

There are 316 students at a school. If 120 students stay after school to play spirts, how many students do not stay after school

?
Mathematics
1 answer:
lozanna [386]3 years ago
3 0

316-120=196

Step-by-step explanation:

Subtract the number staying from the total number

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<img src="https://tex.z-dn.net/?f=%20%7Ba%20%7D%5E%7B2%7D%20%20%2B%208a%20%2B%2015%20%3D%200" id="TexFormula1" title=" {a }^{2}
NISA [10]

Answer:

a = - 5, a = - 3

Step-by-step explanation:

Given

a² + 8a + 15 = 0 ← in standard form

(a + 3)(a + 5) = 0 ← in factored form

Equate each factor to zero and solve for a

a + 3 = 0 ⇒ a = - 3

a + 5 = 0 ⇒ a = - 5

8 0
3 years ago
Write an equation of the line that is parallel to x=-11 that passes through the point (-9, 0).
zysi [14]
X=-9

There is no slope in either equation. Therefore, x=-11 and x=-9 will be two vertical and parallel lines at (-11,0) and (-9,0)
4 0
3 years ago
Which set of ordered pairs could be generated by an exponential function ?
lawyer [7]

Answer:

The third choice is the correct answer

Step-by-step explanation:

The set of ordered pairs which could be generated by an exponential function is

(1,\frac{1}{2}),(2,\frac{1}{4}),(3,\frac{1}{8}),(4,\frac{1}{16})

If we examine the y-values of this set of ordered pairs, we can see that they have a common ratio of

r=\frac{1}{4}\div \frac{1}{2}

r=\frac{1}{4}\times 2

r=\frac{1}{2}

This makes it exponential.

6 0
2 years ago
Read 2 more answers
If 4x+y=h, then x is equal to
lianna [129]
4x + y = h

Rearrange the problem so your equation equals x, not h
y - h = -4x

Divide both sides by -4
-4y - 4h = x

Cheers!
5 0
3 years ago
What is the value of x
kozerog [31]

Answer:


Step-by-step explanation:

If the upper triangle has a right angle at Island C, we need only use the Pythagorean Theorem to find x:

(10 mi)^2 + (20 mi)^2 = x^2, so that

x^2 = 100 mi^2 + 400 mi^2 = 500 mi^2, which reduces to

x = +10√5 mi

Note that the shortest side (10 mi) is adjacent to a 30 degree angle.  Thus, the upper triangle is a 30-60-90 triangle, meaning that the Pythagorean Theorem DOES apply here.

Next time, please incude ALL of the verbal instructions.  Thank you.

6 0
3 years ago
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