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2 years ago

Help!!!!!!!! 2 questions!

Mathematics

1 answer:

Bad White [126]2 years ago

5 0

The one on the left is b and the one on the right is -1.

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How much is one quarter & three pennies

irina1246 [14]

One quarter = 25 cents, and three pennies is three cents. added together gives you 28 cents.

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2 years ago

What are the domain and range of the function below? Domain[0, ∞). range (-∞, ∞). Domain[0, ∞). Range (-∞,4). Domain(0,4). Range

Nadusha1986 [10]

Answer:

Domain[0, ∞). Range (-∞,4).

Step-by-step explanation:

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2 years ago

What is the hcf of 108 and 24

kicyunya [14]

Answer:

2 × 2 × 3 = 12

Step-by-step explanation:

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2 years ago

Read 2 more answers

Math<br> solve this pls lol

dexar [7]

Answer:

The two triangles are related by congruent angles/similarity, so the triangles are similar.

Have an awesome day! :D

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1 year ago

The area of the sector formed by the 110 degree central angle is 50 units squared. What is the circumference of the circle

Mama L [17]

Answer:

The circumference of the circle is $C=45.346 \:units$ .

Step-by-step explanation:

A sector is the part of a circle enclosed by two radii of a circle and their intercepted arc. A pie-shaped part of a circle.

The area of a circle is given by $A_{circle}=\pi r^2$

The formula used to calculate the area of a sector of a circle is:

$A_{sector}=\frac{central \:angle}{360} \cdot {Area \:of \:whole \:circle}\\\\A_{sector}=\frac{\theta}{360} \cdot \pi r^2$

The circumference of a circle is the distance around the outside of the circle and its given by

$C=2\pi r$

We know the central angle $\theta$ = 110º and the area of the sector 50 units squared.

First, we use the formula to calculate the area of a sector to find the radius.

$50=\frac{110}{360} \cdot \pi r^2\\\\\frac{110}{360}\pi r^2=50\\\\\frac{11\pi }{36}r^2=50\\\\11\pi r^2=1800\\\\r^2=\frac{1800}{11\pi }\\\\\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}\\\\r=\sqrt{\frac{1800}{11\pi }},\:r=-\sqrt{\frac{1800}{11\pi }}$

The radius can't be negative. Therefore,

$r=\sqrt{\frac{1800}{11\pi }}\approx 7.217 \:units$

Next, we apply the formula for the circumference of a circle.

$C=2\pi (7.217)=45.346 \:units$

7 0

2 years ago