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3 years ago

2.

Mathematics

2 answers:

Svetllana [295]3 years ago

8 0

He works 40 hours a week.

SIZIF [17.4K]3 years ago

5 0

The answer is 40 if you divide 480 by 12 you’ll get 40

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Select the two values of x that are roots of this equation.

makkiz [27]

Answer:

$\implies x = (-2) \qquad or\qquad x = \dfrac{-3}{2}$

Step-by-step explanation:

Given :-

A quadratic equation is given to us.
The equation is 2x² + 7x +6=0

And we need to find out the roots of the given equation. We can use the middle term splitting method to find out the roots as ,

Given equation :-

$\implies 2x^2 + 7x +6=0$

Step 1: Find out the factors of 12 :-

We will choose the two factors such that their sum equals to the coefficient of x i.e. 7 .The factors are , 1×12 , 2×6 , 3×4 .

And 3 + 4 = 7. So we will break the middle term into 3x and 4x .

Step 2 : Breaking the middle term :-

$\implies 2x^2 + 3x+4x +6=0$

Step 3: Take out common from terms :-

$\implies x(2x + 3) +2(2x +3)=0$

$\implies ( x +2)(2x+3)=0$

Step 4 : Equate them with 0 :-

$\implies x = (-2) \qquad or\qquad x = \dfrac{-3}{2}$

Hence the correct options are C and D .

5 0

2 years ago

A dime has a radius of 8.5 millimeters. Find the circumference of a dime to the nearest tenth

g100num [7]

Well C=Dπ so C=17 x 3.14 = 53.38 which is rounded to 53.4

3 0

3 years ago

Need help please!

dimulka [17.4K]

(1) QS bisecting <PQR implies <PQS = <SQR

(2) <PQS=45 deg and (1) imply <SQR also = 45 deg

(3) from (2) it follows that <PQR = <PQS + <SQR = 45 + 45 deg = 90 deg and therefore the triangle is right-angled

5 0

3 years ago

Lucia has 18 pieces of ribbon that she uses to decorate presents. One ribbon's length is 5/6 of a yard. How many yards of ribbon

suter [353]

Answer: 15 yards

Step-by-step explanation:

From the question, we are given the information that Lucia has 18 pieces of ribbon that she uses to decorate presents and that the length of one ribbon is 5/6 of a yard.

Therefore, the number of yards of ribbon that Lucia has will be gotten by multiplying 5/6 by the total pieces of ribbon. This will be:

= 5/6 × 18

= 15 yards

4 0

2 years ago

I craft store retailer uses a markup rate of 65%. A scrapbook kit cost three retailer $20 I did. What is the selling price of th

Alinara [238K]

Answer

Find out the selling price of the scrapbook kit .

To prove

As given

I craft store retailer uses a markup rate of 65%.

A scrapbook kit cost $20 .

Than 65% is written in the decimal form.

$= \frac{65}{100}$

= 0.65

Mark up price = 0.65 × 20

= $ 13

Selling price of Scrapbook kit = Cost of Scrapbook kit + Mark up price.

= 13 + 20

= $33

Therefore the the selling price of the scrapbook kit $33.

4 0

3 years ago

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