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Masteriza [31]
2 years ago
10

Sum of 4 times a number and twice the sum of the same number and three

Mathematics
2 answers:
Kitty [74]2 years ago
5 0

Answer: 56 (i think)

Step-by-step explanation:

4x[2(4+3)]

4[2x7]

4x14

56

Setler [38]2 years ago
4 0

\large \mathfrak{Solution : }

let the number be " x "

According to the above statement :

  • 4x + 2(x + 3)

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Mr. Chang’s class has 28 students, 4/7 of whom are girls. Which equation shows how to determine the number of girls in Mr. Chang
mars1129 [50]

Answer:

b

Step-by-step explanation:

6 0
2 years ago
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A ball is thrown downward from a cliff. Its position at time t seconds is given by the formula s(t) = 16t2 + 32t, where s is in
Rom4ik [11]

Answer:

It takes 2.8 seconds for the ball to fall 215 ft.

Step-by-step explanation:

We are given a position function s(t) where s stands for the number of feet the ball has fallen, so we have to replace s with the given value of 215 ft and solve for the time t.

Setting up the equation.

The motion equation is given by

s(t) =16t^2+32t

We can replace there s = 215 ft to get

215=16t^2+32t

Solving for the time t.

From the previous equation we can move all terms in one side to get

16t^2+32t-215=0

At this point we can solve for t using quadratic formula.

t = \cfrac{-b\pm \sqrt{b^2-4ac}}{2a}

where a, b and c are the coefficients of the quadratic equation

at^2+bt+c=0

So we get

a=16\\b=32\\c=-215

Replacing on the quadratic formula we get

t = \cfrac{-32\pm \sqrt{32^2-4(16)(-215)}}{2(16)}

Using a calculator we get

t=-4.8 , t = 2.8

Physically speaking the only result that makes sense is to move forward in time that give us t = 2.8 seconds.

We can conclude that it takes 2.8 seconds for the ball to fall 215 ft.

3 0
3 years ago
I’m trying to find this I have an answer but I don’t know if it’s right 10points
Zolol [24]
Aint it 150 decimeters?
4 0
3 years ago
0.74y=128<br> what is the value of y
Bingel [31]
Y = 172.972972972...

You need to isolate the variable, y. To do this, you need to divide both sides of the equation by 0.74. This gives you your final answer.
4 0
2 years ago
Read 2 more answers
Which of the following is the product of the rational expression shown below? 5/2x-1 x 6/x
Rina8888 [55]

Answer:

30/(2x^2-x)

Step-by-step explanation:

5/(2x-1) * 6/x

Multiply the numerators

5*6 = 30

Multiply the denominatos

(2x-1) *x = 2x^2 -x


5/(2x-1) * 6/x = 30/x(2x-1) = 30/(2x^2-x)

4 0
2 years ago
Read 2 more answers
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