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fiasKO [112]
3 years ago
13

Write an equation for the following word problem: "the difference of twice a number and 3 is -21"

Mathematics
1 answer:
murzikaleks [220]3 years ago
4 0

Answer:

-9

Step-by-step explanation:

You might be interested in
Laura wrote and solved the following expression to find the total number of beads Lina has if there are 6 beads in each packet.
bulgar [2K]
<h3>The number of beads lina has is 31</h3><h3>Laura made a mistake by adding the constant 7 and variable 4b</h3>

<em><u>Solution:</u></em>

Given that,

Laura wrote and solved the following expression to find the total number of beads Lina has

There are 6 beads in each packet

7+4b = 11b

= 11(6)

=66

From given,

Lina has a total of 7 + 4b beads

Given that, There are 6 beads in each packet

Substitute b = 6

7 + 4(6)

Simplify

7 + 24

Add

31

Thus, she has a total of 31 beads and not 66 beads

Laura made a mistake by adding the constant 7 and variable 4b

But a constant and variable cannot be added

4 0
3 years ago
Which equation represents a nonlinear function?​
Sergeu [11.5K]

Answer:

Step-by-step explanation:

Algebraically, linear functions are polynomials with highest exponent equal to 1 or of the form y = c where c is constant. Nonlinear functions are all other functions. An example of a nonlinear function is y = x^2.

3 0
3 years ago
Read 2 more answers
If a line has a slope of -8/9 a line that is perpendicular has a slope of what​
miss Akunina [59]
9/8

Explanation: a perpendicular slope is the opposite of what the normal slope was before
5 0
3 years ago
The original price is $40.90 and the sale price is 30% off what would be two different expressions for the equation?
Ann [662]

Answer:

(40.90 ÷ 100) × 30

And

0.3 × 40.90

8 0
3 years ago
Please help me! I’ll name you brainiest!!!
Kamila [148]

Answer:

80

Step-by-step explanation:

first, put in (5x-4) for the x in g(x).

g(f(x))=(5x-4)^2 -1

now, FOIL and simplify.

25x^2-40x+16-1

25x^2-40x+15

now, plug in -1 for x.

25(-1)^2-40(-1)+15

25+40+15

80

8 0
3 years ago
Read 2 more answers
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