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3 years ago

How do we express twice the sum of b and 4

Mathematics

1 answer:

jolli1 [7]3 years ago

4 0

Answer:

2(b+4) or 2b + 8

Step-by-step explanation:

(b + 4)

2 * (b+4)

Multiply 2 by b and 4

2b + 4*2 =

2b + 8

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Nola purchased 2.5 pounds of cheese for 10.50. Her mother purchased 3pounds of the same cheese for$12.60. The cost of cheese var

Dennis_Churaev [7]

Answer:

cost per pound = $4.20

Step-by-step explanation:

Cheese cost per pound = ?

first for the cost per pound

cost per pound = total cost / pounds bought

cost per pound = $10.50 / 2.5 pounds

cost per pound = $4.20

to check the above answer is correct

cost per pound = total cost / pounds bought

cost per pound = $12.60 / 3 pounds

cost per pound = $4.20

Therefor, the cheese costs $4.20 per pound.

5 0

3 years ago

Find the factor of each ff. 6z²+12z+18

frosja888 [35]

Answer:

Step-by-step explanation:

6z² + 12z +1 8

= 6(z^2 + 2z + 3).

That's it.

8 0

2 years ago

Solve this multistep equation 12-5-16+3x=-23-9x

allsm [11]

The answer is x= -6/7

3 0

3 years ago

Plz help with equation of the circle will award fastest CORRECT answer with brainliest

aliina [53]

Answer:

$(x-1)^2+(y-2)^2=6.25$

Step-by-step explanation:

The equation for a circle is given by:

$(x-h)^2+(y-k)^2=r^2$

Where (h,k) is the center and r is the radius.

The center is the red dot, which is (1,2). Thus, h=1 and k=2.

To find the radius, you need to use the distance formula. We are given two coordinates: the center (red dot) at (1,2) and a blue dot on the circle at (2.5,4). Find the radius by using the distance formula:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Let (1,2) be x₁ and y₁ and let (2.5,4) be x₂ and y₂. Therefore:

$d=\sqrt{(2.5-1)^2+(4-2)^2}\\d=\sqrt{(1.5)^2+2^2}\\d=\sqrt{2.25+4}\\d=\sqrt{6.25}=2.5$

Thus, r is 2.5.

Plugging these numbers into the equation, we have:

$(x-h)^2+(y-k)^2=r^2\\(x-1)^2+(y-2)^2=2.5^2\\(x-1)^2+(y-2)^2=6.25$

3 0

3 years ago

Please help! (URGENT)

aksik [14]

It’s 180-135 which equals 45 so it is 45 degrees for X

6 0

3 years ago