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ZanzabumX [31]
3 years ago
12

⚠️ATTENTION ⚠️ I need help with this please explain the problem -10x+9=-21

Mathematics
2 answers:
frutty [35]3 years ago
7 0

Answer:

x=3

Step-by-step explanation:

-10x+9=-21

Subtract 9 from each side

-10x+9-9=-21-9

-10x = -30

Divide each side by -10

-10x/-10 = -30/-10

x = 3

gizmo_the_mogwai [7]3 years ago
5 0
-10x + 9 = -21
-10x = -21 - 9
-10x = -30
x = -30 / -10
x = 3
Hope this help! If it is, Pls Brainliest
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Can you answer these questions for me please and thank you
jasenka [17]
1. I don't what it means by models sorry.
2.
a) gcf of 4d and 12e is 4
    4(d+3)
b) gcf of 18x and 30y is 6
    6(3x+5y)
c) gcf of 21a and 28y is 7
    7(3a+4y)
d) gcf of 24f and 56g is 8
    8(3f+7g)

Hope this helps :)

6 0
3 years ago
2. Which equation represents y=-x2 - 10x-20 in vertex form?
Naily [24]

Answer:

\large\boxed{y=-(x+5)^2+5}

Step-by-step explanation:

The vertex form of a quadratic equation <em>y = ax² + bx + c :</em>

y = a(x - h)² + k

(h, k) - vertex

We have the equation

y=-x^2-10x-20

Convert to the vertex form:

y=-x^2-2(x)(5)-20

y=-x^2-2(x)(5)-5^2+5^2-20

y=-(\underbrace{x^2+2(x)(5)+5^2}_{(*)})+25-20       <em>use (a + b)² = a² - 2ab + b²</em>

y=-(x+5)^2+5

8 0
3 years ago
What is the equation?<br> And how did you get that equation?
lord [1]

Answer:

3 times x could get you that

Step-by-step explanation:

5 0
3 years ago
Solve the inequality for y.<br>20 &lt;-2y<br>Simplify your answer as much as possible.​
Diano4ka-milaya [45]
Answer:
y<-10

Explanation:
20<-2y

Divide both sides by -2
20
-___ >y
2

Simplify 20/2 to 10
-10>y

Switch sides
y<-10
4 0
3 years ago
SOMEONE PLEASE HELP ME QUICK
Semenov [28]

Answer It is the first option because it has reflectional symmetry vertically and horizontally, therefore creating 4 lines of symmetry. If that's wrong, then it's "c."

Step-by-step explanation:

because it has reflectional symmetry vertically and horizontally, therefore creating 4 lines of symmetry. If that's wrong, then it's "c."

7 0
3 years ago
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