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VARVARA [1.3K]
3 years ago
6

1 (6x + 21) - 4x = 15

Mathematics
1 answer:
valina [46]3 years ago
7 0

Answer:

7

Step-by-step explanation:

It is seven since fist, you add like terms. then you divide ALL by three.

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What are the slope and y-intercept -3x-8y=10
choli [55]
The equation of any straight line, called a linear equation, can be written as: y = mx + b, where m is the slope of the line and b is the y-intercept. The y-intercept of this line is the value of y at the point where the line crosses the y axis.
5 0
3 years ago
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What is the square root of 0.0225
ohaa [14]

Answer:

0.15

Step-by-step explanation:

i goog.led it its probably right

6 0
3 years ago
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Please help me with this math word problem
hjlf
Answer: The cost of 16 pencils and 10 notebooks is $5.84.


Explanation: You can solve this using linear systems:

Let X be the cost per pencil, and let Y be the cost per notebook.

(1) 7x+8y=4.15
(2) 5x+3y=1.77

Choose a variable to eliminate. I’ll eliminate X first as an example. To eliminate a variable, you must have the same coefficient beside the variable for both equations.

Equation 1 now becomes:

(3) 35x+40y=20.75

Equation 2 now becomes:

(4) 35x+21y=12.39

Now that you have 35 as a coefficient for X in both equations, you can subtract the two equations to officially eliminate it!

(3)-(4)

19y=8.36
y=0.44

Now that you have the value of Y, substitute that value into either one of the equations to get X.

Substitute y=0.44 in (1)

7x+8(0.44)=4.15
7x+3.52=4.15
7x=0.63
x=0.09

Therefore, the cost per pencil is $0.09/pencil and the cost per notebook is $0.44/notebook.

Almost done lol...

To find the cost of 16 pencils, multiply 0.09*16. That gives you $1.44, which will be the cost of 16 pencils.
The cost of 10 notebooks is 0.44*10, which gives you $4.40. That’s the cost of 10 notebooks.

To find the total price, add these values together!

1.44+4.40=5.84

Therefore, the cost of 16 pencils and 10 notebooks is $5.84.

Hope that helps シ
3 0
3 years ago
What ratio would be used to convert 0.5 miles to yard
NeTakaya
Convert Miles to Yards:

yd =mi * 1760.0

Shown work:
mi -> yd
yd =mi * 1760.000
yd =0.5 * 1760.000
yd =880.0000

Result: 8.8e+2   OR simply just: <span>0.5mi= 880yd</span>
4 0
3 years ago
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Solve the inequality 2x−y⩾−5 for y. Which inequality represents the inequality in slope-intercept form?
aleksandr82 [10.1K]

Answer:

y\leq 2x+5

This represents slope intercept form: y = mx + b

Step-by-step explanation:

2x - y \geq -5\\2x+5\geq y

4 0
2 years ago
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