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 )
Answer:7.2+z=10
Step-by-step explanation:if I am right you just have to do the equacion
Fairs holds 16 milliliters.
40 * 0.4 = 16
Answer:
the answer is 140
Step-by-step explanation:
ANSWER:
0.1347 ROUNDED to the nearest tenth is 0.1
Step-By-Step Explanation:
0.1347 rounded to the nearest thousandth is 0.135 and 0.135 rounded to the nearest hundredth is 0.14 so because the value of the digit in the hundredths place is 4, you round your answer to the nearest tenth of 0.1
