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allsm [11]
3 years ago
7

3x + 4y = 14 5x – 6y = -40

Mathematics
1 answer:
monitta3 years ago
7 0

Answer:

(-2, 5)

Step-by-step explanation:

(I used substitution.)

To solve, first solve for the first variable (x) in one of the equations, then substitute the result into the other equation.

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Solve for z. 5z − 6 − 34 = zz − 6
valkas [14]

Answer:

z=\frac{17}{2}

Step-by-step explanation:

5z-6-34=z-6

combine like terms (-6-34)

5z-40=z-6

subtract z on both sides

5z-z-40=-6

4z-40=-6

add -40 on both sides

4z=34

divide both sides by 4

\frac{4z}{4}=\frac{34}{4}

z=\frac{17}{2}

hope this helps

7 0
3 years ago
What additional information is needed to prove abc =aed by hl
kvasek [131]

To prove that these two triangles are congruent by Hypotenuse Leg theorem, we need to know that a hypotenuse and a leg are congruent or equal. Since we already see that a leg is congruent, we now need to know that the hypotenuses are congruent. The hypotenuses are CA and DA, meaning that to prove that these two triangles are congruent by HL, we need to know that CA is congruent to DA, or the second option.

5 0
3 years ago
9. The volume of the cone pictured is 9 cm^3 and the radius is 6 cm. What is
olasank [31]
Hsushenzjzjwjshxhsjsjxbxjjdjsksk sorry
5 0
3 years ago
Evaluate the expression for the given value of the variables.
Pie

Answer:

8.4

Step-by-step explanation:

0.9c - 2.3d

given c = 17 and d = 3, substitute these into the expression:

0.9c - 2.3d

= 0.9(17) - 2.3(3)

= 15.3 - 6.9

= 8.4

6 0
3 years ago
PLEASE HELPP ASAP
zaharov [31]

Answer:

1/2

Step-by-step explanation:

the triangle is half the size of the orgional.

8 0
3 years ago
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