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iris [78.8K]
3 years ago
7

Y=-x 5x+2y=9 BRAINLIEST REWARDED

Mathematics
2 answers:
Blizzard [7]3 years ago
6 0
<span>Y=-x</span>→<span>
5x+2y=9

5x+2(-x)=9</span><span>
5x-2x=9
3x=9
x=9</span>÷3
x=3
timama [110]3 years ago
3 0
5x+2-x=9
     -2     -2
5x-x=7
4x=7
---  ---
4     4

X= 1.75
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Kelly has a ribbon that is 60 inches long. She
Anon25 [30]

Answer:20

Step-by-step explanation: Cause 60-20=40

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3 years ago
Aimee lives 8/9 mile of the park. She has walked 3/5 of the way to the park. How far Aimee walked? is it multiplying or adding
Ede4ka [16]

Answer:

Yesterday,Annie walked 9/10 mile to her friend's house.Together,they walked 1/3 mile to the library.Which is the best estimate for how far Annie walked yesterday? a)about 1/2 mile b)about 1 mile c)about 1 1/2 miles d)about 2 miles ===== 0.9 + 0.333 = 1.233 miles

Step-by-step explanation:

8 0
3 years ago
A town's public works department has ordered sand to spread on roadways during the upcoming winter snows. The delivered sand for
ira [324]

Answer:

1256 cubic yards of sand.

Step-by-step explanation:

In this question we have to find the volume of cone formed by sand.

Height of the cone is = 36 feet

Radius of the cone = 60/2 =30 feet.

Now we know the formula of volume of cone v = π r² (h/3)

By putting the values of r and h we can get the volume of sand to spread.

Volume = π×(30)²×(36/3) = 3.14×900×12 feet³

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Now we will convert feet³ to cubic yards

Since 1 cubic feet = .037037 cubic yards

therefore 33912 cubic feet = 33912×.037 = 1256 cubic yards.

So the answer is 1256 cubic yards of sand has the department received.

5 0
3 years ago
Violin strings are parallel. Viewed from above, a violin bow in two different positions forms two transversals to the violin str
V125BC [204]

Answer:

<em>x = 10; y = 20</em>

Step-by-step explanation:

8x + y = 100     (alternate exterior angles are congruent)

4x + y = 60       (corresponding angles are congruent)

Subtract the second equation from the first equation.

4x = 40

x = 10

Substitute x = 10 in first equation and solve for y.

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3 0
3 years ago
X&gt;0, y&gt;0, 2x+3y=8, smallest value of xy? pls help me
torisob [31]

Answer:

where there is x in the equation we put 0

For y

=2(0)+3y=8

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=3y=8-0

=3y=8 Divide both sides by 3

=3y/3=8/3

Therefore y=2.6

For x

=2x+3y=8

=2x+3(0)=8

=2x+0=8 Group likely terms

=2x=8-0

=2x=8 Divide both sides by 2

=2x/2=8/2

Therefore x=4

The smallest numbers for x and y is 4 and 2.6 respectively

7 0
4 years ago
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