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spin [16.1K]
3 years ago
10

(−2y 2 +6y−1)−(−4y 2 −3y+9)

Mathematics
2 answers:
Eva8 [605]3 years ago
5 0
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Combine Like Terms:
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10
Ksivusya [100]3 years ago
5 0

Answer:

2y2+9y−10

Step-by-step explanation:

Distribute the Negative Sign:

=−2y2+6y−1+−1(−4y2−3y+9)

=−2y2+6y+−1+−1(−4y2)+−1(−3y)+(−1)(9)

=−2y2+6y+−1+4y2+3y+−9

Combine Like Terms:

=−2y2+6y+−1+4y2+3y+−9

=(−2y2+4y2)+(6y+3y)+(−1+−9)

=2y2+9y+−10

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What percent of 60 is 150?
nignag [31]
To work out what percent of 60 is 150 just do the following:

150 / 60 = 2.5
2.5 x 100 = 250

Therefore 150 is 250% of 60. Hope I helped!
5 0
4 years ago
WILL MARK CORRECT ANSWER BRAINLIEST
vladimir1956 [14]
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8 0
3 years ago
Before sunrise, the temperature was 22.4°F below zero. By noon, it had risen 12.8°F. What expression can be used to find the
mrs_skeptik [129]

Answer:

-22.4+12.8

Step-by-step explanation:

If the temperature started at 22.4 below zero you would write that as -22.4 because it had risen 12.8 degrees you would add those 12.8 degrees to -22.4

8 0
3 years ago
Read 2 more answers
If f ( x ) = 7 ( x − 1 ) + 8 f(x)=7(x−1)+8 , what is the value of f ( 1 ) f(1) ?
antiseptic1488 [7]

Answer:

8

Step-by-step explanation:

f(1) is another notation for x = 1

so we’ll plug in 1 for x

f(1) = 7((1) -1) +8

f(1) = 7(0) +8

f(1) = 0 +8

f(1) = 8

8 0
3 years ago
A manufacturer knows that their items have a normally distributed length, with a mean of 16.2 inches, and standard deviation of
statuscvo [17]

Answer:

57.926%

Step-by-step explanation:

Calculation for the probability that it is less than

16.4 inches long

Using this formula

z = (X - μ) / σ

Where,

X represent Date=16.4

μ represent Mean=16.2

σ represent Standard deviation=0.9 inches

Let plug in the formula

z = (16.4 - 16.2) /0.9 inches

z=0.2/0.9 inches

z = 0.2

Using Z-score table to find the area of 0.2

z=0.57926*100

z=57.926%

Therefore the probability that it is less than

16.4 inches long is 57.926%

6 0
3 years ago
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