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Sholpan [36]
3 years ago
9

HELP PLEASE math problem help!!

Mathematics
2 answers:
natima [27]3 years ago
8 0

Answer:

+ or - the square root of 9

Step-by-step explanation:


Fantom [35]3 years ago
3 0

Answer:

Ok take the root of both side and solve

So the Answer is x = 3i, - 3i Hope this helps :)

Step-by-step explanation:


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−k+2(−2k−5) simplify
Agata [3.3K]

Answer:

-k-14

Step-by-step explanation:

Use distributive property and then just carry on and combine like terms.

5 0
2 years ago
Read 2 more answers
Which two do i pick ? Evaporation changes gas / liquid water to ice (solid) / water vapor (gas).
dimaraw [331]
Evaporation changes liquid water and even solid water (ice) to water vapor, which is a gas. This all part of the water cycle! Hope this helps!!
7 0
3 years 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
3 years ago
Help me pls. Given the slope is 1/3, the y-intercept is 4, and a point of the graph is (3,5). Write the equations of the linear
enyata [817]
Y=1/3x+4? Is that what you need?
6 0
3 years ago
Write a simplified expression for the
Simora [160]

Answer: 3.75 + - 7

Step-by-step explanation:

1.5x - 3 + 1.5x - 3 + 0.75x - 1

1.5x + 1.5x + 0.75x - 3 + - 3 + - 1

3.75x + - 7

3 0
3 years ago
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