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3 years ago

Help me plssss i don’t know what the missing exponent is

Mathematics

2 answers:

Rzqust [24]3 years ago

7 0

Answer:

?=7

Step-by-step explanation:

When you divide, you just subtract the exponents. so 5^11/5^?=5^4 ?=7

borishaifa [10]3 years ago

6 0

Answer:

$5^{7}$

Step-by-step explanation:

so $5^{11} }$ - $5^{7}$ = $5^{4}$

and to check : 11-7 = 4

5 is constant

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What is the simplified form of 3/4x+3+21/8x^2-14x-15

creativ13 [48]

Solution:

We have been asked to find the simplified expression of

$3/4x+3+21/8x^2-14x-15=\frac{3}{4x+3} +\frac{21}{8x^2-14x-15}\\ \\ \text{We will have to make the denominator equal to add}\\ \\ \ 8x^2-14x-15=8x^2+6x-20x-15\\ \\ \ =2x(4x+3)-5(4x+3)=(4x+3)(2x-5)\\ \\ \frac{3}{4x+3} +\frac{21}{8x^2-14x-15}=\frac{3}{4x+3} +\frac{21}{(4x+3)(2x-5)}\\ \\ =\frac{3(2x-5)+21}{(4x+3)(2x-5)}\\ \\ =\frac{6x-15+21}{(4x+3)(2x-5)} \\ \\ =\frac{6x+6}{(4x+3)(2x-5)} \\$

6 0

3 years ago

If paper was £1.99 a pack and is now £3.98 a pack, what is the percentage increase in the price of the product?

spayn [35]

Answer:

100%

Step-by-step explanation:

The initial price of the paper = 1.99

The final price of the pack of paper = 3.98

We need to find the percentage increase in the price of the product. It can be solved as follows :

$\%=\dfrac{3.98-1.99}{1.99}\times 100\\\\=100\%$

So, the percentage increase in the price of the product is 100%.

5 0

3 years ago

For the function y=3x−1, when the input (x)= 7, the output (y) = ?

MariettaO [177]

Answer:

y=3x-1 (replace x with 7 )

Step-by-step explanation:

y=3 (7)-1

y= 21-1

y= 20

note: multiply 3 with seven and minus 1 the answer is y so y=20

8 0

2 years ago

Missing side length

Gwar [14]

Answer:

m = 5

Step-by-step explanation:

We are told that the two triangles are similar. Thus, each side of the larger triangle is the same multiple of the corresponding side in the smaller triangle.

Thus, 12 = k(7.2), where k is the constant of proportionality.

Solving this for k, we get

k = 12/7.2 = 1 2/3

Thus, side m is 1 2/3 times 3, or 5/3 times 3, or just 5.

m = 5

8 0

4 years ago

Hend bought a vacuum cleaner for LE 250 and sold it for LE 200, then

Vesna [10]

Answer:

yes

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers