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Tamiku [17]
3 years ago
10

Find the sum. I need help.​

Mathematics
2 answers:
Artyom0805 [142]3 years ago
6 0

Answer:

B

Step-by-step explanation:

Bbbbbbbbbbbbbbbbbbbbbbbbbb

AlexFokin [52]3 years ago
5 0

Answer:

The answer is B.

Step-by-step explanation:

3y  x  5                2x  x  4

-----------     +   ----------------

3y  x  2x              2x  x  3y

15y                8x

-------    +    ----------

6xy                6xy

15y    +    8x

--------------------

        6xy

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Please help with these
kherson [118]

The answers are as follows.

a. 9x

In order to get this, you need to reevaluate 64 as a base of 4. Since 64 is equal to 4^3, we can rewrite the right side as

64^3x = (4^3)^3x = 4^9x

Which gives you the first answer.

b. 10

Similar to the first problem, we need to express 16 as a base of 2. 2^4 is equal to 16, so we use that in it's place and simplify.

16^5/2 = (2^4)^5/2 = 2^20/2 = 2^10

c. Sqrt(7.31)

This one is more simple. Raising something to a 1/2 power (.5) is the same as taking the square root.

4 0
3 years ago
On the highway, a car can travel 21 miles per gallon of gas. If the car travels for 4 hours on the highway at a rate of 65 miles
lora16 [44]

Answer:

12.4 gallons

Step-by-step explanation:

65 mph x 4 hours means the car went 260 miles. Divide by 21 to get the number of gallons. 12.4 gallons.

6 0
2 years ago
Read 2 more answers
Solve the system of equations by the substitution method. x+4y=6 y=3−x
Fiesta28 [93]

Answer:

x = 2, y = 1

Step-by-step explanation:

x + 4y = 6 and y = 3 - x have to be rearranged: x + 4y = 6 and x + y = 3

You subtract the equations to eliminate one of the variables (x) so that the other can be found

3 0
3 years ago
Sarah read her book for 2 1/8 hours on Monday, 1 1/2 hours on Wednesday, and 1 3/4 hours on Friday. How many hours did she read
Bezzdna [24]

Answer:

Step-by-step explanation:

Add the fractions by finding the greatest common factor of them all. if not any break up into 2 then add the other fraction to i

3 0
3 years ago
The supplement of an angle is 3 times the complement of an angle.
-Dominant- [34]
Let’s says that x is the measure of the angle. X and it’s supplement are equal to 180. X and it’s complement are equal to 90. The supplement is s and the complement is c. S is times c which is the same as 3c.

3c + x = 180

C+x = 90
X = 90 - c

3c + 90 - c = 180
2c = 90
C = 45

The complement of. 45 degree angle is 45 degrees.

The angle is 45 degrees.
6 0
3 years ago
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