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notsponge [240]
3 years ago
9

-4÷[1/3(7-1/2)]+3(pls show your work) ​

Mathematics
1 answer:
jek_recluse [69]3 years ago
3 0

Step-by-step explanation:

= -4 ÷ ( 1/3 × (7 - 1/2) ) + 3

= -4 ÷ ( 1/3 × 13/2 ) + 3

= -4 ÷ 13/6 + 3

= -4 × 6/13 + 3

= -24/13 + 3

= -24/13 + 39/13

= 15/13

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Solve the system of equations using elimination. 5x+4y=−14
Ne4ueva [31]

Answer:

The answer is (A) (-6,4).

Step-by-step explanation:

First you have to multiply the first equation by 6 and the second equation by 4. Then next you subtract the second equation from 1.

30x + 24y = - 84

12x + 24y = 24

18x + 0. = - 108

=> 18x = - 108

=> x = - 108 / 18

=> x = - 6

Then for the next step

then put in x = - 6 in equation 2 and solve for y

( 3x + 6y = 6)

(3×(-6) + 6y = 6)

( - 18 + 6y = 6)

( 6y = 18 + 6 )

( 6y = 24)

(y = 4 )

(I really do hope this helps!!!)

4 0
2 years ago
Read 2 more answers
Breyanna is buying a new dress .The dress is on sale for 20% off.Breyanna will also have to pay 10% sales tax on the discounted
Nuetrik [128]
Hi,<span>
Let x be 100 dollars(since per cent means out of 100)(also SP)
</span>SP without sales tax= 100 - d%/100 * SP
= 100-20/100 * 100
=80/100 * 100
= 0.8 * 100
= 80 dollars=SP without tax
tot. SP(SP with tax)= 100 + tax%/100 * SP
=100 + 10 /100 * 80
= 110/100 * 80
= 11/10 * 80
=1.1* 80
=88%
Breyanna will have to pay 88% <span>of the dress original price. 
Hope this helps you.</span>

8 0
3 years ago
Select all that apply. In a linear function: Δy = 0 Δx = 0 Δy = n Δx = n Δy = -n Δx = -n
DENIUS [597]
Answers: All the options are right and have a special meaning.

Explanation:

1) <span>Δy = 0

Means y is constant, which is also that the slope is zero.

The function is a horizontal line (paralell to the x-axis)

2) Δx = 0

Means x is constant, the slope is not defined (∞).

The function is a vertical line (parallel to the y-axis)

3) Δy = n

Means that the change in y is constant. So, only if the change in x is also constant the slope is constant and the function is linear.

This is because the slope is Δy / Δx.

4) Δx = n

Means the change in x is constant. So, only if Δy is constant it is a linear function, for the same reason explained above

5) Δy = -n and and 6) Δx = -n

Same reasoning of 3 and 4.
</span>
3 0
3 years ago
If you log out of Brainly for a month will you still get charged?
sweet-ann [11.9K]

I don't think you can as long as your not plus.

3 0
3 years ago
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Solve |2x|=8<br> Tell me how you got the answer pls
lilavasa [31]

Answer:

4

Step-by-step explanation:

2 x 4 = 8

Absolute value means no symbols so it would just be 2 x something equals 8 which is 4.

6 0
3 years ago
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