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Mashcka [7]
3 years ago
9

9) y = 7x - 20 3x + 8y = 17 For substitution

Mathematics
1 answer:
xenn [34]3 years ago
3 0
X=3
y=1
Use substitution method starting with the first equation substitute y in the second equation

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the larger of two numbers is one more than 5 times the smaller number. If the sum of the numbers is 43, what is the smaller numb
pochemuha
7. The smaller number is 7 because 7x5=35
35+1+7=43
5 0
4 years ago
Jkl is an equilateral triangle jk= 13x+5,KL= 17X-19 AND JL= 8X+35​
stira [4]

Answer:

x = 6

Step-by-step explanation:

Since the triangle is equilateral then sides are congruent.

Equate any 2 sides and solve for x

13x + 5 = 8x + 35 ( subtract 8x from both sides )

5x + 5 = 35 ( subtract 5 from both sides )

5x = 30 ( divide both sides by 5 )

x = 6

JK = (13 × 6) + 5 = 78 + 5 = 83

KL = (17 × 6) - 19 = 102 - 19 = 83

JL = (8 × 6) + 35 = 48 + 35 = 83

ΔJKL is equilateral with side = 83

4 0
3 years ago
When I was 6 my sister was 3. If im 70 now, how old is she. Trying to give away points.
Ad libitum [116K]
She would be 67 years old
3 0
4 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=-12t%20%C2%B2%20%2B%2040t" id="TexFormula1" title="-12t &sup2; + 40t" alt="-12t &sup2; + 40t"
d1i1m1o1n [39]

Answer:

1.15

Step-by-step explanation:

tan θ=−4/7, and 270°<θ<360°

θ is in 4th quadrant

sec θ = 8.06 / 7 = 1.15

8 0
3 years ago
Find the unit rate.<br> 30 newspapers in 2 piles<br> =<br> newspapers per pile
Anika [276]
30 newspapers/2 piles = 15 newspapers/1 pile

It’s just reducing 30/2 into a fraction with a denominator of 1.
5 0
3 years ago
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