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quester [9]
3 years ago
10

The equation 2x - y = -7 written in slope-intercept form is

Mathematics
1 answer:
bonufazy [111]3 years ago
4 0
In slope-intercept form, it’s y = 2x + 7
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How to solve for b = -1 -7a when the input,a, is 6
azamat

Answer:

-43

Step-by-step explanation:

Input 6 where a is so then do -7 x 6 which would be -42

the equation is now b = -1 - 42

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8 0
3 years ago
Lizzie has 30 coins that total $4.80. All of her coins are dimes, D, and quarters, Q. Algebraically determine how many of each t
Gnom [1K]

Lizzie has 18 dimes and 12 quarters

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

Let "d" be the number of dimes

Let "q" be the number of quarters

We know that,

value of 1 dime = $ 0.10

value of 1 quarter = $ 0.25

Given that LIzzie has 30 coins

number of dimes + number of quarters = 30

d + q = 30 ---- eqn 1

Also given that the coins total $ 4.80

number of dimes x  value of 1 dime + number of quarters x  value of 1 quarter = 4.80

d \times 0.10 + q \times 0.25 = 4.80

0.1d + 0.25q = 4.8 ------ eqn 2

Let us solve eqn 1 and eqn 2

From eqn 1,

d = 30 - q ---- eqn 3

Substitute eqn 3 in eqn 2

0.1(30 - q) + 0.25q = 4.8

3 - 0.1q + 0.25q = 4.8

0.15q = 1.8

<h3>q = 12</h3>

From eqn 3,

d = 30 - 12

<h3>d = 18</h3>

Thus she has 18 dimes and 12 quarters

6 0
3 years ago
Write 1 2/3 as the sum of a whole number and two fractions that have the same denominator.
larisa [96]
1+1/3+1/3 because 1/3 and 1/3 have the same denominator.
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Question 2 options:
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2. 7 PM
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10 points help please help me no understand math
guajiro [1.7K]

Answer:

TX

Step-by-step explanation:

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2 years ago
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