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lions [1.4K]
3 years ago
5

What is the value of y?

Mathematics
1 answer:
ANTONII [103]3 years ago
7 0

Answer:

y = 22°

Step-by-step explanation:

the sum of the interior angles of a triangle is 180 degrees

40 + 2x = 180

2x = 140

x = 70

'x' and '5y' form a linear pair, meaning they add up to 180 degrees

x + 5y = 180

substitute 70 for 'x'

70 + 5y = 180

5y = 110

y = 22

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Mei Mei invested $1700 in an account that pays 3% interest compounded annually.
algol [13]

Answer:

$2728

Step-by-step explanation:

Use compound interest formula:

A = P(1 + \frac{r}{n})^{nt}

P = 1700, r = 0.03, n = 1, t = 16

Plug in numbers:

A = 1700(1 + \frac{0.03}{1})^{(1)(16)}

Simplify:

A = 1700(1.3)^{16

Use calculator:

A = 2728

4 0
2 years ago
CAN SOMEONE HELP ME WITH THESE QUESTIONS PLEASE!?
sukhopar [10]

Answer:

Step-by-step explanation:

1.

(c+9)^2=64=8^2\\

c+9=±8

either c=8-9=-1

c=-8-9=-17

so c=-1,-17

D

2.

8x^2-3=2

8x^2=5

x^2=\frac{5}{8}=\frac{10}{16}

x=±\frac{\sqrt{10}}{4}

so A

3.

x^2+4x+4=18\\(x+2)^2=9*2\\x+2=3\sqrt{2} \\x=-2  ±3\sqrt{2}

so D

or

8 0
3 years ago
Which graph represents y=^3sqrt x-5​
Lelechka [254]

Answer:

4

Step-by-step explanation:

Graph 4

7 0
3 years ago
A ball is thrown from an initial height of 4 feet with an initial upward velocity of 17ft/s. The ball's height h (in feet) after
iVinArrow [24]
Use quadratic formula 
8= 4 +17t -16t^2
16t^2 - 17 t + 4
answers (17 + square root (33)) /32 and  (17 - square root (33)) /32
4 0
4 years ago
PLEASE PLEASE HELP ME!!! Carla rode her bicycle 4 miles to the park and it took her 30 minutes.
White raven [17]

Answer:

30 mins = 0.5 hours

4.5 miles/0.5 hours = your answer

Step-by-step explanation:

4 0
3 years ago
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