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Gnesinka [82]
3 years ago
8

Points

Mathematics
1 answer:
Lubov Fominskaja [6]3 years ago
3 0

Answer:

The amount invested at 9% is $30,000

Step-by-step explanation:

Mardi received an inheritance of $40,000.

Let x be the amount invested at 9%.

So, Amount invested at 10% = 40000-x

Her total annual income from the investments was  $3700.

So, 0.09x+0.1(40000-x)=3700

0.09x+4000-0.1x=3700

x=30000

Hence the amount invested at 9% is $30,000

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There are 36 carpenters in a crew. On a certain day, 29 were present. What percent showed up for work.
PolarNik [594]
29/36=0.8055
0.8055*100
80.55% showed up for work
4 0
3 years ago
The measure of the​ angle's supplement is 60
Sever21 [200]

Answer:

80°

Step-by-step explanation:

Let the angle be x then four times it's complement plus 60, that is

4(90 - x) + 60 ← is it's supplement

Supplementary angles sum to 180°

Sum the angle and it's supplement and equate to 180

x + 4(90 - x) + 60 = 180 ← distribute and simplify left side

x + 360 - 4x + 60 = 180

- 3x + 420 = 180 ( subtract 420 from both sides )

- 3x = - 240 ( divide both sides by - 3 )

x = 80

The required angle = x = 80°

supplement = 4(90 - 80) + 60 = 4 × 10 + 60 = 40 + 60 = 100°

4 0
3 years ago
ILL GIVE YOU BRAINLIST !!!! What is the slope of this table?
VLD [36.1K]

Answer: Slope is m = 2/3

Step-by-step explanation:

-You have exactly four points on a table:

(3,2) (6,4) (9,6) (12,8)

-Use the slope formula and use any two points from those four points in order to find the slope:

m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}

-The two points I use are  (3, 2)  and (6,4 ) for the equation:

m = \frac{4 - 2}{6-3}

m= \frac{2}{3}

So, the slope of the table is \frac{2}{3}.

8 0
3 years ago
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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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