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Paraphin [41]
3 years ago
10

Is this function linear, quadratic, or exponential?​

Mathematics
1 answer:
ss7ja [257]3 years ago
8 0

Answer:

quadratic

Step-by-step explanation:

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Solve 3x+2y=7 and x-4y=-21 by using any method
kupik [55]

Answer:

(- 1, 5 )

Step-by-step explanation:

Using the method of substitution.

Given the 2 equations

3x + 2y = 7 → (1)

x - 4y = - 21 → (2)

Rearrange (2) expressing x in terms of y by adding 4y to both sides.

x = 4y - 21 → (3)

Substitute x = 4y - 21 into (1)

3(4y - 21) + 2y = 7 ← distribute and simplify left side

12y - 63 + 2y = 7

14y - 63 = 7 ( add 63 to both sides )

14y = 70 ( divide both sides by 14 )

y = 5

Substitute y = 5 into (3)

x = (4 × 5) - 21 = 20 - 21 = - 1

Solution is (- 1, 5 )

8 0
4 years ago
PLEASE HELP WILL GIVE BRAINLIEST
Olin [163]

Answer:

Step-by-step explanation:

in tri ADC and tri BDC

∠ADC =∠BDC = 90

DC is common

AD = BD (given)

triangle ADC ≅ tri BDC by SAS congruency

hence AC = BC by CPCT ( congruent parts of congruent triangles)

hence, BC = 13

8 0
4 years ago
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Ax+ By =z how to solve for y?
Trava [24]

Answer:

Ax+BY=z First subtract Ax from both sides to get By=z-Ax. Then divide by B from both side to get y=(z-Ax)/B

Step-by-step explanation:

8 0
3 years ago
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2.4,1.6,3.2,0.3,1.5 each new piece of data is doubled calculate the mean
jekas [21]
Given the numbers above and those numbers only the mean would be 1.8
6 0
3 years ago
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Task 7: In the triangle, AC = 10, CB = 7, and YZ = 4. Find the values:
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3 years ago
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