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3 years ago

Given a+b=7 and a–b=3, find: 2^a*2^b

Mathematics

1 answer:

seropon [69]3 years ago

7 0

Answer:

128

Step-by-step explanation:

5+2=7

5-2=3

2^5=32

2^2=4

32*4=128

Hope this helps:)

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Expand and combine like terms.<br> (3c^4-5c^6)^2

lora16 [44]

Answer:

$9c^{8} -30c^{10} + 25c^{12}$

Step-by-step explanation:

We can use formula (a-b)² = a² -2ab + b².

In our example a = 3c^4 and b = 5c^6

$(3c^{4} - 5c^{6})^{2} = [3c^{4} ]^{2} - 2*3c^{4} *5c^{6} + [5c^{6}]^{2}=\\=9c^{8} -30c^{10} + 25c^{12}$

4 0

2 years ago

Provide 5 examples of an integer.

Olin [163]

Example of integers are -5 ,1 ,5 , 8 , 97 and 3,043

4 0

3 years ago

What is the measure, in degrees, of an angle that represents 50/350 of a circle?

JulsSmile [24]

Answer:

$\mathrm{A.\: 50^{\circ} }$

Step-by-step explanation:

Since there are 360 degrees in a circle, we can set up the following proportion:

$\frac{50}{360}=\frac{x}{360},\\360x=50\cdot 360,\\x=\boxed{50}$

8 0

3 years ago

Question 1 Part A One of Maria and Josie’s early tasks is printing and laminating signs to hang at local businesses around town.

maks197457 [2]

Answer:

Using the table

Maria does 1/4 of the job in 1 hour since it takes her 4 hours to complete the job , she works x hours and completes x/4 of the task

Josie does 1/2 of the job in 1 hour since it takes her 2 hours to complete the job , she works x hours and completes x/2

x/4 + x/2 = 1 completed task

Multiply by 4

x/4 *4 + x/2*4 = 1*4

x+2x =4

3x=4

x = 4/3

x = 1 1/3 hours

5 0

3 years ago

Read 2 more answers

Q3.

umka2103 [35]

Answer:

8.48%

Step-by-step explanation:

Bill's weight decreases from 64.8 kg to 59.3 kg.

We need to find the percentage decrease in Bill's weight. It can be calculated as follows :

$\%=\dfrac{64.8 -59.3 }{64.8 }\times 100\\\\=8.48\%$

So, the required decrease in percentage is 8.48%.

3 0

3 years ago