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ad-work [718]
3 years ago
14

0.75x10= what is the answer.

Mathematics
2 answers:
ahrayia [7]3 years ago
7 0

Answer:

7.5

Step-by-step explanation:

Anything times 10 you should just add an invisible digit to the end and move everything one over. That way from 0.75, you can get 7.5.

kvv77 [185]3 years ago
6 0

Answer:

7.5

Step-by-step explanation:

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The coordinates below represent two linear equations. How many solutions does this system of equations have?
AlexFokin [52]
<span>find the equations of the lines in slope-intercept form which is y=mx+b where m=slope b=y intercept
the choices:
0 solutions: means the lines don't intercect at all, meaning same slope but different y intercept or they ar paralell
1 solution: lines intercect in 1 point
2 solutions: curvy line with a straight line thorugh middle
infinetly solutions: same line
 



to find slope you do
slope=(y1-y2)/(x1-x2)
first line is
(-4,8)
(4,6)
(x,y)
x1=-4
y1=8
x2=4
y2=6
subsitute
(8-6)/(-4-4)=2/-8=-1/4
slope=-1/4
subsitute
y=-1/4x+b
subsitute one of the points
(4,6)
x=4
y=6
6=-1/4(4)+b
6=-1+b
add 1 to both sides
7=b
y=-1/4+7

now solve for the other equation


(-1,1)
(3,5)
x1=-1
y1=1
x2=3
y2=5
subsitute
(1-5)/(-1-3)=(-4)/(-4)=4/4=1
y=1x+b
subsitute
(-1,1)
x=-1
y=1
1=1(-1)+b
1=-1+b
add 1
2=b
y=x+2

we have the lines
y=-1/4x+7 and
y=x+2
solve for a common solution
y=x+2 and y=-1/4x+7 therefor
x+2=-1/4x+7
subtract 7 from both sides
x-5=-1/4x
mulitply both sides by -4
-4x+20=x
add 4x to both sides
20=5x
divide both sides by 5
4=x
subsitute
y=x+2
y=4+2
y=6
the soluiton is (4,6)
there is only one solution
the answer is B</span>
8 0
2 years ago
Im drowning. pls help. ​
oksian1 [2.3K]

Answer:

a.) (x-10)(x+4)

Step-by-step explanation:

x^2-6x-40

Find two numbers that add up to -6 and multiply to -40 (you will most likely need a negative and a positive because -40):

-10 and 4

Factor:

(x-10)(x+4)

Finito.

7 0
2 years ago
Help<br> Find the volume of this cone.<br> Use 3 for TT.
natima [27]

Answer:

180ft^{3}

Step-by-step explanation:

Volume of a cone:

V=\pi r^{2} \frac{h}{3}

Take \pi as 3, as mentioned in the question

'r' is 'radius' ⇒ {diameter is given so divide by 2: 12/2 = 6}

'h' is 'height'

V=(3)(6)^{2} (\frac{5}{3} )

V=(3)(36)(\frac{5}{3} )

V=108(\frac{5}{3} )

{multiply 108 with 5 and then divide the answer by 3}

V=108 × 5

V=540

V=540/3

V=180ft^{3}

3 0
2 years ago
Read 2 more answers
Help me pls now help
marshall27 [118]

Answer:

16

Step-by-step explanation:

Since DF and BC are similar, their ratios are:

12:3

4:1

Since AB is similar to ED:

Substituting the ratio:

x:4

Hence, x = 16

Hence, AB = 16

<em>Hope this helps and be sure to have a wonderful time ahead at Brainly! :D</em>

8 0
3 years ago
Read 2 more answers
Martin recorded the low temperatures at his house for one week. The temperatures are shown below.
Lana71 [14]
It would be 1. You add all the temperatures. Get the sum and divide it by the amount of temperatures.
5 0
3 years ago
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