3 years ago

Please help me i'll give 20 points to whoever helps me answer all 4 of them and brainly

Mathematics

1 answer:

Brilliant_brown [7]3 years ago

7 0

Answer:

G - number of arrangements

F. the amount of her allowance

B. y = x

H. the number of hours

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14. What is the area of a triangle with base 19 inches and height 11 inches? (1 point)

Dahasolnce [82]

Area = (bh)/2
b = 19, h = 11
Plug in the value
Area = (19 * 11)/2
Area = 209/2 = 104.5

Solution: 104.5 square inches

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3 years ago

Which is true about the two triangles below?

Bezzdna [24]

Answer:

Step-by-step explanation:

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4 years ago

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45% of _____________is 165

elena-14-01-66 [18.8K]

Answer:

366.666666

Step-by-step explanation:

Let the number be x

45% of x = 165
x*45/100 = 165
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3 years ago

5v-4/10=4/5 (please show work)

il63 [147K]

5v - 4/10 = 4/5
5v = 4/5 + 4/10 = 6/5
v = (6/5)/5 = 6/25

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4 years ago

Find a common solution for each system of equations:<br> y=3x+5<br> y=-5x-3

Nina [5.8K]

$\left\{\begin{array}{ccc}y=3x+5\\y=-5x-3\end{array}\right\\\\substitution\ method\\\\3x+5=-5x-3\\3x+5x=-3-5\\8x=-8\ \ \ \ \ /:8\\x=-1\\\\y=3(-1)+5=-3+5=2\\\\Solution:x=-1\ and\ y=2.$

$graphing\ method\\\\ \left\{\begin{array}{ccc}y=3x+5\\y=-5x-3\end{array}\right\\------------------\\y=3x+5\\y-intercept\ (x=0)\\y=3(0)+5=5\\(0;\ 5)\\x-intercept\ (y=0)\\3x+5=0\\3x=-5\\x=-\frac{5}{3}\\(-\frac{5}{3};\ 0)\\---------------------$
$y=-5x-3\\y-intercept\ (x=0)\\y=-5(0)-3=-3\\(0;-3)\\x-intercept\ (y=0)\\-5x-3=0\\-5x=3\\x=-\frac{3}{5}\\(-\frac{3}{5};\ 0)\\\\Solution:((-1;\ 2)\to x=-1\ and\ y=2.$

8 0

4 years ago