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Savatey [412]
3 years ago
15

A number is decreased by seven. Then, the new number is multiplied by 3 to get an answer of -9.

Mathematics
2 answers:
Alexus [3.1K]3 years ago
6 0
The answer is 4 because of the symbol
enyata [817]3 years ago
5 0

Answer:

The answer is C.4.

Explanation:

What I did was to divide -9 by 3 to get -3. Then I added 7 to -3, which got me to the answer of 4.

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Jenna has $500 in her account and withdraws $50 every Sunday to pay for her account after n lessons,
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Answer:

What do you want for the answer?

This?

500-50n

Step-by-step explanation:

7 0
3 years ago
Simplify: <br> <img src="https://tex.z-dn.net/?f=2%2F5%281%2F3x-15%2F8%29-1%2F3%281%2F2-2%2F3x%29" id="TexFormula1" title="2/5(1
expeople1 [14]

Answer:

16/45x-11/12

Step-by-step explanation:

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3 years ago
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The ratio of the width to the height of a window is 2:7. The width of the window is 3ft. Write and solve a proportion to find th
poizon [28]
10.5 -- 3/2=1.5 -- 7x1.5=10.5
5 0
3 years ago
What multiplies to 16 and adds to negative 12
Romashka-Z-Leto [24]
Factor 16 and see the - factor pairs and add them, see which add to -12
-1-16=-17 nope
-2-8=-10 nope
-4-4=-8
hmm


we will solve with math
xy=16
x+y=-12
minus  x both sides
y=-12-x
sub for y in other equation
x(-12-x)=16
-12x-x^2=16
add 12x+x^2 both sides
0=x^2+12x+16
use quadratic formula
if you have
ax^2+bx+c=0
x=\frac{-b+/- \sqrt{b^{2}-4ac} }{2a}


0=x^2+12x+16
a=1
b=12
c=16

x=\frac{-12+/- \sqrt{12^{2}-4(1)(16) }}{2(1)}
x=\frac{-12+/- \sqrt{144-64 }}{2}
x=\frac{-12+/- \sqrt{80}}{2}
x=\frac{-12+/- 4\sqrt{5}}{2}
x=\frac{-6+/- 2\sqrt{5}
x=\frac{-6+ 2\sqrt{5} or \frac{-6- 2\sqrt{5}

aprox
x=-1.52786 or -10.4721

those are the numbers

the numbes are -1.52786 or -10.4721

6 0
3 years ago
Read 2 more answers
Erggkhbqea <br><br>cbse class 7 maths chapter 8 exercise 8.3 solutions in ​
madam [21]

Answer:

am I supposed to join your meet with that C0DE

5 0
2 years ago
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