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2 years ago

I need to simplify the circled questions and explain how I got my answers.

Mathematics

2 answers:

artcher [175]2 years ago

8 0

7) 2^3 / 2(3+5)
8/2(5)
4/5
.8

10) 8(4-1) x 4
8(3) x 4
24x4
96

12) 9^2 (1+1) + 7
81 (2) + 7
162+7
169

14) 8^2 -1 +4 /2
64-1+4/2
67/2
33.5

18) 11^2 + 2^3 -3 x 4
121 + 8 - 3 x 4
129 -12
117

postnew [5]2 years ago

6 0

#7 2^3÷2(3+2) 2^2×(3+2) 4×5 20

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Can I please have the answers ASAP -10+4= -7-11=

Oxana [17]

Answer: for -10 + 4 the answer is -6

for -7 - 11 the answer is -18

Step-by-step explanation:

For -10+4 all you do is start at -10 and go up 4 to -6 (-9, -8, -7, -6)

and for -7 - 11 you start at 7 and just go down (but the numbers get bigger) to -18 (-8, -9, -10, -11, -12, -13, -14, -15, -16, -17, -18)

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2 years ago

Carlos kicks a ball into the air. The function that models the scenario is f(t)= -16t^2+ 96t

gregori [183]

Check the picture below

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3 years ago

4.20. According to a report released by the National Center for Health Statistics, 51% of U.S. households has only cell phones (

Sergeu [11.5K]

Answer:

The probability that the household has only cell phones and has high-speed Internet is 0.408

Step-by-step explanation:

Let A be the event that represents U.S. households has only cell phones

Let B be the event that represents U.S. households have high-speed Internet.

We are given that 51% of U.S. households has only cell phones

P(A)=0.51

We are given that 70% of the U.S. households have high-speed Internet.

P(B)=0.7

We are given that U.S. households having only cell phones, 80% have high-speed Internet. A U.S household is randomly selected.

P(B|A)=0.8

$\frac{P(A\capB)}{P(A)}=0.8\\P(A\capB)=0.8 \times P(A)\\P(A\capB)=0.8 \times 0.51\\P(A\capB)=0.408$

Hence the probability that the household has only cell phones and has high-speed Internet is 0.408

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2 years ago

Find the value of r so the line that passes through each pair of points has the given slope.

padilas [110]

Answer:

- 4

Step-by-step explanation:

( 3 - r ) / ( 1 + 5) = 7/6

$\frac{3-r}{1+5}$ = $\frac{7}{6}$ ⇒ 3 - r = 7 ⇒ r = - 4

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2 years ago

Which is equivalent to x(-14x + 9)?

victus00 [196]

SO YOU HAVE X(-14X+9). ALL YOU DO IS THE DISTRIBUTION PROPERY OR MULIPLE BY X

SO WE GET -14X^2+9X.

X(-14X+9)= -14X(*)X+9(*)X= -14X^2+9X

HOPE THIS HELPS

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3 years ago