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3 years ago

Given thatf(x)=x5−x,findf(−15).

Mathematics

1 answer:

bekas [8.4K]3 years ago

6 0

The answer is 60. You plus 15 into x

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A boy decided to save by an unusual method.He put 1cent, the first week.2cent in the second week,4xent in the third week,8cent i

lesya692 [45]

Answer:

Step-by-step explanation:

for 1st week=1 ¢

for 2nd week= 2¢

for 3rd week= 4¢

for 4th week=8¢

for 5th week=16¢

for 6th week=32¢

for 7th week=64¢

for 8th week=64+64=128¢

for 9th week= 128+128=256¢

for 10th week= 256+256=512¢

.: he saved a total of

1+2+4+8+16+32+64+128+256+512=1023¢

1023¢=1023/100=$10.23

4 0

3 years ago

Solve for x. Assume that lines appear to diameters are actual diameters.

pav-90 [236]

Answer:

B. 9

Step-by-step explanation:

We know that a full circle should equal 360°, that'll help!

Since the 140°+3x+13 should equal to 180, because that makes the half of the circle it covers, we know how to set up our equation!

It should look like this:

3x+13=40

ISOLATE YOUR VARIABLE:

- Subtract 13 from both sides

NEXT, CONTINUE ISOLATING:

3x=27

- Divide by 3 from both sides.

FINALLY:

You will get X=9!

4 0

3 years ago

What's the hcf and lcm of 5and 7

svetlana [45]

Answer:

gcf, hcf, gcd (5; 7) = 1: greatest (highest) common factor (divisor), calculated. Coprime numbers (relatively prime). Numbers have no common prime factors.

7 0

3 years ago

Read 2 more answers

Which equation are true for x=-2 and x=2 check all that apply

ki77a [65]

1 it is true
${x}^{2} - 4 = 0 \\ {x}^{2} = + 4 \\ x = \sqrt{4} = 2$
2 it's not true
${x}^{2} = - 4$
3 it's not true
$3 {x}^{2} + 12 = 0 \\ 3 {x}^{2} = - 12 \\ {x}^{2} = \frac{ - 12}{3} = - 4 \\$
4 it's true
$4 {x}^{2} = 16 \\ {x}^{2} = \frac{16}{4} = 4 \\ x = \sqrt{4} = 2$
5- it's true
${2(x - 2)}^{2} = 0 \\ {(x - 2)}^{2} = 0 \\ x - 2 = 0 \\ x = 2$

4 0

4 years ago

Read 2 more answers

Please help me asap <br> I will give brainliest <br> Worth 20 points :)

11111nata11111 [884]

Answer:

6.5 inches

Step-by-step explanation:

It moves up about 1/2 of an inch per day, so we just multiply 13 by 1/2 and that equals 6.5 inches. I hope this helped and please mark me brainliest!

7 0

4 years ago