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3 years ago

What error did Heather make?

Mathematics

1 answer:

vazorg [7]3 years ago

7 0

Answer:

D. She used the part, 75, to write the percent ratio. The part-to-whole percent ratio is 300/100

Step-by-step explanation:

♡ ∩_∩

（„• ֊ •„)♡

┏━∪∪━━━━┓

♡ good luck 。 ♡

┗━━━━━━━┛

Joe_Bro93

2 years ago

thx

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Hector has 3/4 hour to spend his homework. He wants to spend 1/3 of this time on math homework, 10 minutes of his time on readin

DENIUS [597]

Answer:

20 minutes

Step-by-step explanation:

Remember that

$1\ h=60\ mi$

we know that

Hector has 3/4 hour to spend his homework

Convert to minutes

$\frac{3}{4}(60)=45\ min$

1) He wants to spend 1/3 of this time on math homework

To find out the time on math homework, multiply 45 minutes by 1/3

$45(\frac{1}{3})=15\ min$

2) He wants to spend 10 minutes of his time on reading homework

3) He wants to spend the remaining time on science homework

The time spend on math homework plus the time spend reading homework, plus the time spend on his science homework must be equal to 45 minutes

Let

x ----> the time spend on his science homework

$15+10+x=45$

Solve for x

$25+x=45\\x=45-25\\x=20\ min$

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2 years ago

Which of the following solution sets is all real numbers? Ixl >-2 Ixl <-2 Ixl = -2

Lisa [10]

The first one, |x|>-2

6 0

3 years ago

Read 2 more answers

One fourth of y is less than or equal to -12 as an inequality

taurus [48]

Answer:

1/4Y $\leq$ -12

Step-by-step explanation:

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3 years ago

The polynomial p(x)=x^3-19x-30 has a known factor of (x+2)

riadik2000 [5.3K]

Answer:

(x+2) (x+3) (x-5)

Step-by-step explanation:

x³-19x-30 = (x+2) (x²+ax-15) ... x³=x*(1*x²) while -30= (2)*(-15)

x³ + 0*x² - 19x -30 = x³ + (2+a)x² + (2a-15)x -30

2+a = 0

a = -2

x³-19x-30 = (x+2) (x²-2x-15) = (x+2) (x+3) (x-5)

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2 years ago

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sally has a pet snail that snail fell in the well the well is 16 feet deep. each day the snail climbs up 5 feet but each night i

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Answer:

The net speed per 24 hours is 5 - 4 = 1 foot.

1 ft / 24 hrs = 16 ft / x hrs

16 * 24 hrs = 16 days (384 hrs)

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3 years ago