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Oduvanchick [21]
2 years ago
10

Find the gradient of the line segment between the points (7,-2) and (5,5).

Mathematics
1 answer:
cricket20 [7]2 years ago
3 0

Answer:-7/2

Step-by-step explanation:

y2 -y1/x2-x1=gradient

5--2/5-7

7/-2

7/-2

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.
jarptica [38.1K]

Answer:

3 gallons

Step-by-step explanation:

Let

x ----> the amount of pure acid (100% solution) in gallons

Remember that

100\%=100/100=1

20\%=20/100=0.20

60\%=60/100=0.60

we know that

(1)(x)+(0.20)(3)=(0.60)(x+3)

solve for x

x+0.60=0.60x+1.80

x-0.60x=1.80-0.60\\0.40x=1.20\\x=3\ gal

therefore

3 gallons of pure acid should be mixed with 3 gallons of a 20% acid solution in  order to get a 60% acid solution

7 0
3 years ago
(x +8)(x + 11) = 0<br> Pls help I’m dumb and don’t know this ...
Ivanshal [37]

Answer:

Step-by-step explanation:

x= -8,-11

5 0
3 years ago
Read 2 more answers
Given the triangle that has a base of five less than triple the height. The height is 2x+6.
Deffense [45]

Answer:

<h3>          A = 0.5(2x+6)(6x+13) = 6x² + 49x + 78</h3>

Step-by-step explanation:

H = 2x+6          - the hight

3H = 3(2x+6)      - triple the hight

3H-5 = 3(2x+6) - 5    -  five less than triple the height

Area of triangle:  A = 0.5BH

B = 3(2x+6)-5 = 6x + 18 - 5 = 6x + 13

H = 2x+6

So:

    A = 0.5(2x+6)(6x+13) = (x+6)(6x+13) = 6x² + 13x + 36x + 78

    A = 6x² + 49x + 78

5 0
3 years ago
Solve the equation A = 2LW + 2LH + 2WH for H.
Fed [463]
H = A - 2LW / 2 (L+W)
6 0
3 years ago
Here it is cherly not cherry ​
Fiesta28 [93]

Answer:

it is correct

Step-by-step explanation:

shown above in the photo

3 0
3 years ago
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