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Gemiola [76]
3 years ago
9

What is 15 1/5 + 3 5/8 ?

Mathematics
1 answer:
guajiro [1.7K]3 years ago
6 0

The Answer is 750/40 = 18 33/40

To get this answer you have to find the LCM which in this case is 40 and then multiply to make it into that fraction(multiply both number, and numerator, and denominator) then add. When you add these you get 750/33 and then you have to simplify by dividing and you get 18 33/40

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Choose the algebraic expression that best matches this verbal description: "the sum of 3 and 7 times a number x
aniked [119]

Answer:

b

Step-by-step explanation:

the sum of 3 and 7 is 3+7. then times x

8 0
3 years ago
HELP ME PLZZZZ!!!!!<br><br><br> It’s just 21 and 22
galina1969 [7]

Answer:

21) 12 cm

22) 5.9 cm

Step-by-step explanation:

21) The base is 10, and if the other two sides are congruent and the perimeter is 36, we can figure out with simple algebra that the sides are 13 cm long.

Half of 10 is 5, so we can use the pythagorean theorem.

5^2+x^2=13^2

Rearranging the variables we have 169-25=x^2

144=x^2

x can be plus or minus 12, but since negative length is impossible we find that x is positive 12 cm.

22) We want to use sine, because we have opposite and hypotenuse. A simple and easy way to memorize this is the SohCahToa method. If we have opposite (O) and hypotenuse (H) we have OH. Soh has the letters O and H, and the S means we should use sine.

sine 36=a/10

Plug this into a calculator or desmos scientific calculator to get a=5.9

7 0
3 years ago
Please help thanks!!
Anna35 [415]

First divide both sides by 5. Then you get the answer. -0 or 0 I'm not sure tho


5 0
4 years ago
Read 2 more answers
Assume the readings on thermometers are normally distributed with a mean of 0degreesc and a standard deviation of 1.00degreesc.
Tanzania [10]

Let Z be the reading on thermometer. Z follows Standard Normal distribution with mean μ =0 and standard deviation σ=1

The probability that randomly selected thermometer reads greater than 2.07 is

P(z > 2.07) = 1 -P(z < 2.07)

Using z score table to find probability below z=2.07

P(Z < 2.07) = 0.9808

P(z > 2.07) = 1- 0.9808

P(z > 2.07) = 0.0192

The probability that a randomly selected thermometer reads greater than 2.07 is 0.0192

3 0
3 years ago
Subtract: 3x 2 -7x 4 from 5x 2 - 3x 8.
Andrew [12]
(3x² -7x⁴) from (5x² - 3x⁸)

= 5x² - 3x⁸ - (3x² -7x<span>⁴ )

= </span> 5x² - 3x⁸ - 3x² + 7x<span>⁴ 

= </span>- 3x⁸ + 7x⁴ +  5x² <span>- </span><span>3x²
</span>
= - 3x<span>⁸ </span>+ 7x⁴ +  2x<span>²</span>
4 0
3 years ago
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