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Daniel [21]
3 years ago
6

Solve a system of equations using substitution –2x + 5y = 14 x = 8

Mathematics
1 answer:
gregori [183]3 years ago
7 0

Step-by-step explanation:

Putting value of x

-2(8) + 5y = 14

-16 + 5y = 14

5y = 14 + 16

5y = 30

y = 30 /5 = 6

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Help me with this pls
Ganezh [65]

Answer:

x=55

Step-by-step explanation:

90 degree angle

90-35=55

7 0
3 years ago
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to support a tree damaged in a storm, a 12-foot wire is secured from the ground to the tree at a point 10 feet off the ground. t
Leokris [45]
Choice given:
<span>33.6°
39.8°
50.2°
56.4°

I drew the figure. 
I got 12 ft as the hypotenuse, 10 ft as the opposite.

Sin</span>Θ = opposite / hypotenuse 
SinΘ = 10/12
SinΘ = 0.83

I used the calculator to get the value of each angle using the sine function
sin(33.6°) = 0.55
sin(39.8°) = 0.64
sin(50.2°) = 0.77
sin(56.4°) = 0.83

The angle where the wire meets the ground is approximately 56.4°
8 0
3 years ago
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X-5y=2 and 9x+8=15 solve by substitution
lozanna [386]
x-5y=2
Hence x=2+5y   (Equation I)
9x+8=15             (Equation II)
Substituting Equation I in Equation II
9(2+5y)+8=15
18+45y+8=15
26+45y=15
45y=-11
Hence y= - \frac{11}{45}

Substituting this in Equation in I to get X

x-5(- \frac{11}{45} )=2
x+ \frac{11}{9}=2
x= 2- \frac{11}{9}
x= \frac{17}{9}
7 0
3 years ago
Yup help. help no links plssss
seraphim [82]

Answer:

4.103, 4.13, 4.1, 4.1031

Step-by-step explanation:

4 0
3 years ago
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Four different positive integers have a product of 110.<br>What is the sum of the four integers?​
BigorU [14]
<h3>Answer:  19</h3>

Explanation:

Let's break 110 down into its prime factors

110 = 11*10

110 = 11*2*5

110 = 2*5*11

We have three different prime factors that multiply to 110. However, the instructions say there are 4 integers that multiply to 110. To fix this, we can say

110 = 1*2*5*11

now we see that 1,2,5 and 11 multiply out to 110

They add to 1+2+5+11 = 3+16 = 19

3 0
2 years ago
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