3 years ago

If f(x) = x² + 7, what is the value of f(4)? Enter the answer in the box. PLEASE HELP .

Mathematics

1 answer:

bazaltina [42]3 years ago

7 0

Answer:

Step-by-step explanation:

With f(4), we plug 4 into the function.

f(4) = 4² + 7

f(4) = 16 + 7

f(4) = 23

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Find the non-extraneous solutions of the square root of the quantity x plus 6 minus 5 equals quantity x plus 1.

denis23 [38]

(x+6)^(1/2)-5=x+1
(x+6)^(1/2)=x+6
((x+6)^(1/2))^2=(x+6)^2
x+6=x^2+12x+36
0=x^2+11x+30
(-11+(11^2-4(1)(30))^(1/2))/2
(-11+((1)^(1/2))/2
(-11+1)/2=-5
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(0^(1/2))-5=-5
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2 years ago

Write the two consecutive integers between which the given rational lies

meriva

Answer:

a) -1, 0

b) -5, -4

c) 2, 3

d) -8, -7

Step-by-step explanation:

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2 years ago

Determine whether segments with lengths of 27, 28, and 7 form a triangle. If so, classify the triangle as acute, right, or obtus

gizmo_the_mogwai [7]

Answer:

Step-by-step explanation:

triangle

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2 years ago

A customer will be charged extra if the weight of their suitcase is above 48 pounds.

amm1812

Answer:

$w>48$ pounds

Step-by-step explanation:

The customer will be charged extra if the weight of their suitcase is above 48 pounds.

Let the weight of the suitcase = w (in pounds)

Therefore, w above (greater than) 48 pounds is written mathematically as:

$w>48$ pounds

This is the inequality that represents w, the weight of the suitcase in pounds, that will have an extra charge.

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2 years ago

Please help this is so confusing u can have 25 points if u help me

Elina [12.6K]

Step-by-step explanation:

Share 20pounds in the ratio 2:3

Total ratio=2+3=5

2/5×20=8

20-8=12

Sharing 20pounds in that ratio gives 8pounds:12pounds

Share 15cm in the ratio 1:3

Total ratio=1+4=4

¼×15=3.75

15-3.75=11.25

Sharing 15cm in that ratio gives 3.75:11.25

7 0

2 years ago