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Mariana [72]
3 years ago
9

90 - y = 3y - 70 solve for y I NEEEED THIS NOWWWWWWWWWWWWWWWWWWWWWWWWWWWWW

Mathematics
2 answers:
kirill [66]3 years ago
8 0

Answer:

y=40

Step-by-step explanation:

victus00 [196]3 years ago
5 0

Answer:

y = 40

Step-by-step explanation:

90 - y = 3y - 70

4y=160

y = 40

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For which value or values are the expressions 15k + 9 and 3(2k + 3) + 9k equivalent? A) no values B) 3 C) 3,5 and 8 or D) all va
NeTakaya
15k + 9 = 3(2k + 3) + 9k
15k + 9 = 6k + 9 + 9k
15k + 9 = 15k + 9
0 = 0
D) all Values
5 0
4 years ago
To the nearest whole number, what is the surface area or the right triangular prism
Andrej [43]

Answer:

502 Square Meters

Step-by-step explanation:

Surface Area is the sum of the areas of all the surfaces. There are 5 surfaces in total, so we find each surface area and find total Surface Area.

Shown Below:

Bottom Surface is a rectangle, so area is length * width = 10 * 16 = 160

Back Surface is a rectangle, so area is 6 * 16 = 96

Top (front) surface is a rectangle so area is 11.6 * 16 = 185.6

Left and right sides are 2 triangles, so are would be  0.5(base * height) for each. So,

Left triangle = 0.5 * 10 * 6 = 30

Right triangle = 30

Sum of all the surfaces = 160 + 96 + 185.6 + 30 + 30 = 501.6

Rounded to nearest whole number, that is 502

The surface area = 502 m^2

6 0
3 years ago
Hi, sat math help pls.
stellarik [79]

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7 0
4 years ago
Evaluate the difference quotient for the given function. Simplify your answer.
IgorC [24]

Answer:

-5 - h  

Step-by-step explanation:

ƒ(x) = 1 + 5x - x²

[f(5 + h) -f(5)]/h

= [1 + 5(5 + h) - (5 + h)² - 1 - 5(5) +5²]/h

= (25 + 5h - 25 - 10h - h² - 25 + 25)/h

= (-5h - h²)/h

= -5 - h

The difference quotient is -5 - h.

7 0
3 years ago
Mrs. Eng bought 4 packs of glue sticks. Each pack has 5 glue sticks.
anyanavicka [17]

Answer:

18 glue sticks are left

Step-by-step explanation:

Full Question:

  • Mrs. Eng bought 4 packs of glue sticks. Each pack has 5 glue sticks. Her class uses 2 of the glue sticks for a project. How many glue sticks are left?

Calculations:

  • 4 x 5 = 20
  • 20 - 2 = 18
4 0
3 years ago
Read 2 more answers
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