solve system of equations using the elimination method

Answer:

m<D=80

Step-by-step explanation:

All angles of a triangle add up to 180 degrees.  In this case both triangles are the same and you are given two angles

180-70-30= 80 degrees

Answer:

34

Step-by-step explanation:

I am smart

Answer:

The first one

The second one

The third one

The fifth one

Step-by-step explanation:

Answer:

i dunno about other people but the formula I learned needs the question to give you the radius.  

Step-by-step explanation:

ACP=(mAB/360)(2 pi r)

=(74/360)(6.28 r)

=1.29r

Answer:ACP=(mAB/360)(2 pi r)

=(74/360)(6.28 r)

=1.29r

Step-by-step explanation:

Answer:

can u include a picture of the cylinder pls luv

Step-by-step explanation:

Answer:

Step-by-step explanation:

Evan was not correct 125% means he over doubled his time doing homework. To double his time he would need 40 hours, and he only did 25.

Answer: 10%

Step-by-step explanation:

As per given ,

Initial number of people went to pool = 1060

After 4 weeks periods, number of people went to pool = 1060 - 100 +140 -146  ['+' for addition . '-' for decrease]

= 954

The percent decrease in the number of people who went to the pool over these four​ weeks = [tex]\dfrac{1060-954}{1060}\times 100[/tex]

[tex]=\dfrac{106}{1060}\times100\\\\=10\%[/tex]

Hence, the percent decrease in the number of people who went to the pool over these four​ weeks = 10%

Answer:

15

Step-by-step explanation:

Answer:

Yes I can help you :)

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer: A

Step-by-step explanation:

We need to convert each city to percentage. Los Angeles is 13/50 and we can double that to convert it to a percentage of 26%. Next is Seattle which is 3/10 and we can multiply that by 10 to get a percentage of 30%. Next is San Francisco, which is at 2/5 and we multiply that by 20 to get a percentage of 40%. Next is Boston which is 43%. The final city is New York City which is 48%. The order of these cities in least to greatest in percentage of public transport use is Los Angeles, Seattle, San Francisco, Boston,  and New York City. Therefore the answer is A.

Answer:

i think you got it by now

Step-by-step explanation:

Answer:

Step-by-step explanation:

four shortcuts allow students to know two triangles must be congruent: SSS, SAS, ASA, and AAS. Knowing only side-side-angle (SSA) does not work because the unknown side could be located in two different places. ... Because there are 6 corresponding parts 3 angles and 3 sides, you don't need to know all of them.

Answer:

220 mph ; 230 mph

Step-by-step explanation:

Given that :

Speed of First boat = x

Speed of Second boat = y

y = (10 + x) mph

Distance apart after 3 hours = 150 miles

Speed of the boats :

Speed / time = distance

First boat distance = x / 3

Second boat distance = (10+x) /3

x/3 + (10+x)/3 = 150

x + 10 + x = 150 * 3

2x + 10 = 450

2x = 450 - 10

2x = 440

x = 220 mph

Speed of second boat = 220 + 10 = 230 mph

amswer:

-13 feet

step by step:

-18+5=-13

Answer:

7%

Step-by-step explanation:

Answer:

59 + 37

Step-by-step explanation:

96/2 = 48

48 - 11 = 27

48+11 = 59

Answer:

For the second question, the answer is 16 markers.

Step-by-step explanation:

12-4=8 8+8=16

Step-by-step explanation:

B she played 52 minutes long

C 11 players

A length if a half 15

Answer:

Question 3)

[tex]\stackrel{\frown}{AC}=36\text{ inches}[/tex]

[tex]\angle BCA\approx103^\circ[/tex]

Question 1)

[tex]\stackrel{\frown}{AB}\approx 8.9\text{ cm}\\[/tex]

[tex]A\approx44.5\text{ cm}^2[/tex]

Step-by-step explanation:

Question 3)

We are given that the central angle is 1.8 radians and has a radius of 20 inches.  

Part A)

The formula for arc length in terms of radians is given by:

[tex]s=r\theta[/tex]

Where s is the arc length, r is the radius, and θ is the angle in radians.

In this case, r is 20 and θ is 1.8. Hence, the arc length is:

[tex]\stackrel{\frown}{AC}=(20)(1.8)=36\text{ inches}[/tex]

Part B)

∠BCA is the central angle that measures 1.8 radians.

We can convert radians to degrees using the following formula:

[tex]\displaystyle d=\theta\cdot\frac{180^\circ}{\pi}[/tex]

Where d is the measure in degrees, and θ is the measure in radians.

Therefore:

[tex]\displaystyle d=1.8\cdot\frac{180^\circ}{\pi}\approx103.1324\approx103^\circ[/tex]

Question 1)*

Part A)

We will use the arc length formula in degrees given by:

[tex]\displaystyle s=2\pi r\cdot \frac{\theta^\circ}{360}[/tex]

Where r is the radius and θ is the angle measured in degrees.

We have a radius of 10 centimeters and a central angle of 51°. Therefore, our arc length is:

[tex]\displaystyle \stackrel{\frown}{AB}=2\pi(10)\cdot\frac{51}{360}=20\pi\cdot\frac{51}{360}\approx8.9\text{ cm}[/tex]

Part B)

We will use the formula for the area of a sector in degrees given by:

[tex]\displaystyle A=\pi r^2\cdot\frac{\theta^\circ}{360}[/tex]

So, we will substitute 10 for r and 51 for θ. Hence, the area of the sector is:

[tex]\displaystyle A=\pi (10)^2\cdot \frac{51}{360}=100\pi\cdot\frac{51}{360}\approx44.5\text{ cm}^2[/tex]

*Notes:

For this question, it is possible and completely fine for us to convert 51° to radians and then use the formulas in terms of radians.

Answer:

(1). 36 inch. , 103° ; (2). 8.9 cm , 44.5 cm² ;

Step-by-step explanation:

1).

(b). m∠BCA = 1.8 rad. × [tex]\frac{180}{\pi }[/tex] ≈ 103° ( π ≈ [tex]\frac{22}{7}[/tex] )

(a). C = 2 π r , the length of arc AB = ( 2 × [tex]\frac{22}{7}[/tex] × 20 ) ÷ 360° × 103.132° ≈ 36 inches

3).

(a).  The length of arc AB = ( 2 × [tex]\frac{22}{7}[/tex] × 10 ) ÷ 360° × 51° ≈ 8.9 cm

(b). A = π r² , the area of the sector = ( [tex]\frac{22}{7}[/tex] × 10² ) ÷ 360° × 51° ≈ 44.5 cm²

Answer: It is the None of them. If you see, one of the lines is Dotted, and one is solid. So, the Solid has either has ≤ or ≥ in it's equation. If the second option, and in the second option, the second equation has one of those signs, it would be correct, but it doesn't, so it's none of the above. I hope this didn't confuse you, and Happy Holidays! :)

Answer:

3p+b+a=c

Step-by-step explanation:

You want to multiply by 3 to get 3p = a+b+c and then you subtract a+b to get 3p+b+a =c

Answer:

BI**H U H*E FK U U DIRTY U PEE UR PANTS LIKE BOY SHUT UPPPP

Step-by-step explanation:

Answer:

66

77

u will do great u go guy

Answer:

21

Step-by-step explanation:

12 + 9 = 21

that is the distance he ran so that is the distance he will run back

( i hope that helped)

Answer:

-8, -5

Step-by-step explanation:

the answer to number one is -8. For functions, you just plug in the number in the parenthesis for x and then you solve. For number two, it is -5.

Answer:

-8, -5

Step-by-step explanation:

Step-by-step explanation:

Vamos simplificar passo a passo.

k2-6k4-(3k4+k2+2)

Distribua o sinal negativo:

=k2-6k4+-1(3k4+k2+2)

=k2+-6k4+-1(3k4)+-1k2+(-1)(2)

=k2+-6k4+-3k4+-k2+-2

Combine os termos semelhantes:

=k2+-6k4+-3k4+-k2+-2

=(-6k4+-3k4)+(k2+-k2)+(-2)

=-9k4+-2

Responda:

=-9k4-2

Answer:

Step-by-step explanation:

I sympathize. The question is not very clear: you don't know what A and B really are (I mean which vertex).

However it is a rhombus, and you are to assume that B follows A. So put A anywhere and make B follow it. They are supplementary which means they add to 180 degrees. All rhombi have that property.

A + B = 180

A/B = 2/1

Cross Multiply the second equation

A = 2*B

Put 2B into the first equation.

2B + B = 180         Combine the left terms

3B = 180                Divide both sides of the equation by 3

B = 180 / 3

B = 60

B = 60

A = 180 - 60 = 120

Label the two acute angles as 60 and the two obtuse angles as 120.

Acute: means less than 90

Obtuse: means more than 90

Answer:

Step-by-step explanation:

1950

Answer:

1,950

Step-by-step explanation:

I plugged the numbers into a calculator but you can also do it the long way by multiplying 6 to each part of 325.

Answer:

[A] Null Set

Explanation:

Subtract 13 From Both Sides

|z| + 13 - 13 = 11 - 13

Simplify

z = -2

Absolute Value Cannot Be Less Than 0, Therefore There Is So Solution

[A] Null Set

Answer:

null set

Step-by-step explanation: