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oksano4ka [1.4K]
3 years ago
7

1) 10 + 5x = -40 solving two step equations

Mathematics
2 answers:
BabaBlast [244]3 years ago
5 0

Answer:

-10

Step-by-step:

5x=-40-10

5x= -50

x=

kenny6666 [7]3 years ago
3 0

Answer:

10+40=5x

50=5x

X=50/5

X=10

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What is the domain and range of y=-1/4(x)
LenKa [72]

Domain: (-\infty, \infty)

Range: (-\infty, \infty)

Explanation:

The function is y=-\frac{1}{4} x

The domain of a function is the set of all input values for which the function is well defined. Generally, domain consists of all x-values of the function. Hence, the function y=-\frac{1}{4} x is defined in the interval (-\infty, \infty).

The range of a function is the set of output values obtained by substituting the value of x in the function. Hence, the function y=-\frac{1}{4} x is defined in the interval (-\infty, \infty).

6 0
3 years ago
Emma buys a softball that is 70% off. If the original price is $30, how much does Emma pay?
Korvikt [17]

Answer:

$9

Explanation:

First, we need to find 70% of the original price of $30 using the following equation:

\text{ \$30 }\times70\text{ \% = \$30 }\times\frac{70}{100}=\text{ \$21}

It means that Emma pays $21 less than the original price. So, she pays:

$30 - $21 = $9

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6 0
2 years ago
2x — бу = 12<br> х+ 10 = — 9
Serggg [28]

Answer:

x = -19; y = 25/3

Step-by-step explanation:

Step 1: solve the equation with only one variable

Isolate the variable (x)

x + 10 = -9

x = -9 - 10

x = -19

Step 2: input new information into the other equation

If x = -19, then:

2(-19) - 6y = 12

Isolate the variable (y)

-38 - 6y = 12

-6y = 12 + 38

-6y = 50

y = 50 ÷ 6

y = 50/6

Simplify

y = 25/3

5 0
3 years ago
Surface area of solid figures
Lilit [14]

Answer:

C. 468mm²

Step-by-step explanation:

The formula for the surface area of rectangular prism is:

A=2(wl+hl+hw)

Let's break down our variables.

L = 12mm

W = 6mm

H = 7mm + 2mm = 9mm

Now we substitute our values in the formula:

A=2((6)(12)+(9)(12)+(9)(6))

A=2(72+108+54)

A=2(234)

A=468mm^{2}

6 0
3 years ago
A baseball hat for $22.90 at 5% sales tax
vovikov84 [41]
I think it's $21.75 with tax
5 0
4 years ago
Read 2 more answers
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