All categories

3 years ago

PLEASE HELP!!!

Mathematics

2 answers:

Fiesta28 [93]3 years ago

7 0

Answer:

Step-by-step explanation:

or (3, 15) and (4, 12)

Ira Lisetskai [31]3 years ago

4 0

Y = –x2 + 4x + 12
y = –3x + 24
so
–x2 + 4x + 12 = –3x + 24

x^2 -7x + 12 = 0
(x - 4)(x - 3) = 0
x - 4 =0; x =4
x - 3 = 0; x= 3

y = –3x + 24 = -3(3) + 24 = -9+24 = 15 (when x = 3)
y = –3x + 24 = -3(4) + 24 = -12+24 = 12 (when x = 4)

answer
(3, 15) and (4, 12)

You might be interested in

Write the equation for 5x + 2y = 3 in slope-intercept form.<br> 11

Nastasia [14]

5x+2y=3
-5x on both sides
2y=3-5x
divide by 2 on both sides
y=3/2-5/2x
rewrite in order (optional depending on teacher)
y=-5/2x+3/2

6 0

3 years ago

mary's job pays her $8.75 per hour which of the following expressions best represents her total earnings if she works two hours

Shkiper50 [21]

Around 175 dollars with that because that’s 20 hours

4 0

3 years ago

Read 2 more answers

With instructions too please

irga5000 [103]

Answer on pic above

Hope this helps

7 0

3 years ago

Jessica has money in two savings accounts. One rate is 11% and the other is 14%. If she has $300 more in the 14% account and the

Gelneren [198K]

Answer:

$272 was invested in the savings account at 11%
$572 was invested in the savings account at 14%

Step-by-step explanation:

Let the amount in the savings account with 11% interest =x

She has $300 more in the 14% account.

Therefore amount saved at 14%=x+300

Simple Interest= Principal X (Rate/100) X Time

Since, the time is not given, we assume an annual interest.

Therefore, Time =1 Year

Total Interest = $110

Now, our total interest will be a sum of the interest earned at 11% and the interest earned at 14%.

$110=(x*0.11*1)+[(x+300)*0.14*1]\\110=0.11x+0.14x+42\\110=0.25x+42\\\text{Subtract 42 from both sides}\\110-42=0.25x+42-42\\68=0.25x\\\text{Divide both sides by 0.25 to obtain x}\\\frac{68}{0.25} =\frac{0.25x}{0.25} \\x=\$272$

Therefore:

$272 was invested in the savings account at 11%
$572 was invested in the savings account at 14%

Cheers!

6 0

3 years ago

What is the surface area of this right rectangular prism?

oee [108]

Answer:

usually I'll go for scientific manner but I'll try three

6 0

3 years ago

Read 2 more answers