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3 years ago

FREE BRAINLY!! I REALLY NEED HELP WITH THIS QUESTION :(

Mathematics

2 answers:

Ivenika [448]3 years ago

5 0

Answer:290

Step-by-step explanation:

Damm [24]3 years ago

5 0

The answer is 290 I believe

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Which expression is equivalent to RootIndex 3 StartRoot StartFraction 75 a Superscript 7 Baseline b Superscript 4 Baseline Over

slega [8]

Answer:

B. $\frac{b}{2a^{2}c^3}\sqrt[3]{15b}$

Step-by-step explanation:

Given:

The expression to simplify is given as:

$\sqrt[3]{\frac{75a^7b^4}{40a^{13}c^9}}$

Use the exponent property $\frac{a^m}{a^n}=a^{m-n}$

$\frac{a^7}{a^{13}}=a^{7-13}=a^{-6}$

Use the exponent property $(a^m)^n=a^{m\times n}$

$a^{-6}=a^{-2\times 3}=(a^{-2})^3$

$b^4=b\times b^3\\c^{9}=(c^3)^3$

Reducing $\frac{75}{40}$ to simplest form, we get:

$\frac{5\times 5\times 3}{2^3\times 5}=\frac{15}{2^3}$

Therefore, expression becomes:

$\sqrt[3]{\frac{15(a^{-2})^3\times b\times b^3}{2^3(c^3)^3}}$

Use the cubic root property:

$\sqrt[3]{x^3} =x$ . Thus, the expression becomes:

$\frac{a^{-2}b}{2c^3}\sqrt[3]{15b}$

Using the exponent property $a^{-m}=\frac{1}{a^m}$

$a^{-2}=\frac{1}{a^2}$

So, the final expression is:

$\frac{b}{2a^{2}c^3}\sqrt[3]{15b}$

Therefore, the correct option is option B.

7 0

4 years ago

(K-10) divided by 2 = -7<br><br> What’s the answer for the variable k?

stira [4]

Answer:

k = -4

Step-by-step explanation:

(k - 10)/2 = -7

First: multiply by 2 to get rid of the denominator

2(k - 10)/2 = 2(-7)

k - 10 = -14

Next: add 10 to both sides to isolate k

k - 10 + 10 = -14 + 10

k = -4

7 0

4 years ago

c. Find the equation of a straight line which passes through the point (4,4) and whose intercept on the x-axis is 5 times its in

Debora [2.8K]

Answer:

(4×5,4×5)=(20,20)

Step-by-step explanation:

formula =(

(X×a,X×b)

5 0

2 years ago

Can someone tell me which ones in first place and which ones in last place?

skad [1K]

Pretty sure purple would be the first and green would be the last

7 0

3 years ago

Two weather tracking stations are on the equator 146 miles apart. A weather balloon is located on a bearing of N 35°E from the w

jekas [21]

ANSWER:

Distance between two points W and E = 146 miles and B is the position of B (balloon)

Angle BWE =55 degrees and angle BEW =67 degrees therefore angle WBE = 180-55-67 =58 degrees

Using sine formula

w/sin (55)= b/sin(58)

w= 146{sin 55/ sin 58) =141 miles Step-by-step explanation:

3 0

3 years ago

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