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3 years ago

Expand and simplify 4(x-2)+7(x-1)

Mathematics

1 answer:

Zolol [24]3 years ago

5 0

Answer:

11x-15

Step-by-step explanation:

4x-8+7x-7

11x-15

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) The price of a watch is marked Rs 11,250. When it is sold allowing 20% discount,

wlad13 [49]

Step-by-step explanation:

the first step is to find the cost price

when 20% discount=

11250*80/100= 9000

the 20% discounted price is 9000

there is still a 20% profit in this 20% discount

so Cost.Price *120/100=9000

Cost price= 7500

now its asking for discount percentage at 3% profit so first calculate price after 3% profit

7500*103/100= 7725

so discount on rs11250 required to produce 3% profit=

11250*x/100=7725

x= 68.7% discount

7 0

4 years ago

Factor the expression. 16j2 + 24j + 9

rjkz [21]

Option C: $(4 j+3)^{2}$ is the correct answer.

Explanation:

The given expression is $16 j^{2}+24 j+9$

We need to factor the expression.

Let us rewrite the expression as

$(4j)^{2}+24 j+(3)^2$

Also, we can rewrite the term $24j$ as $2(4)(3)j$

Thus, we have,

$(4j)^{2}+2(4j)(3)+(3)^2$

Hence, the equation is of the form,

$(a+b)^{2}=a^{2}+2 a b+b^{2}$

where $a=4 j$ and $b=3$

Hence, the factor of the expression can be written as $(4 j+3)^{2}$

Thus, the factored expression is $(4 j+3)^{2}$

Therefore, Option C is the correct answer.

6 0

4 years ago

Find the value of the power.<br><br> 8^3 =<br><br> Answer

mario62 [17]

Answer:512

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

A store has clearance items that have been marked down by 60%. They are having a sale, advertising an additional 15% off clearan

astra-53 [7]

Answer: 34%

Step-by-step explanation:

Given

Price is marked down by 60% with an additional discount of 15% on the marked down price

Suppose x is the original price of the item

After marking down, it is

$\Rightarrow x-x\times 0.6=0.4x$

after additional discount it is

$\Rightarrow 0.4x(1-0.15)=0.4x\times 0.85=0.34x$

Effective discount on the item is

$\Rightarrow \dfrac{x-0.34x}{x}\times 100=66\%$

Thus, a person is paying $100-66=34\%$ of the original price

6 0

3 years ago

What is the 12th term in the addition pattern with formula 6n – 7? A. 59 B. 65 C. 71 D. 72

MrRissso [65]

B. 65 is correct.......

7 0

4 years ago

Expand and simplify 4(x-2)+7(x-1)​

Expand and simplify 4(x-2)+7(x-1)