4.6 isosceles and Equilateral triangles

Answer:

-14°C

Step-by-step explanation:

Given that,

The mean temperature for the first 4 days in January was -4°C.

The mean temperature for the first 5 days in January was -6°C.

Mean = sum of observations/no. of observations

For first 4 days,

[tex]-4=\dfrac{S_4}{4}\\\\S_4=-16\ ...(1)[/tex]

For first 5 days,

[tex]-6=\dfrac{S_4+T}{5}\\\\S_4+T=-30\ ..(2)[/tex]

Let the temperature on 5th day is T. So,

Put S₄ = -16 in equation (2).

-16 + T = -30

T = -30+16

T = -14°C

So, the temperature on the 5th day is -14°C.

Answer:

C≈81.68

d Diameter

26

Using the formulas

C=2πr

d=2r

Solving forC

C=πd=π·26≈81.68141

Step-by-step explanation:

Hope it is helpful.....

Answer:

83

Step-by-step explanation:

Total averages from the known classes

85+92+95+95=367

367+83=450

Divide 450 by the number of classes she has(5)

=90

Answer:

It's either B or D

Step-by-step explanation:

Which do you think it is?

Answer:

Step-by-step explanation:

All of the above

Answer:

5.65

Step-by-step explanation:

SOMWRGING AROUND THAT

Opposite angles are equal.

Opposite sides are equal and parallel.

Diagonals bisect each other.

Sum of any two adjacent angles is 180°

Answer: simplified ratio would be 3:2

Step-by-step explanation: the ratio would be 12:8

Answer:

2-3, 2 to 3, or 2:3

Step-by-step explanation:

Answer:

Step-by-step explanation:

nachos=3 =100%

1.5=50%

0.50=25%

0.25=12.5%

Answer:  6:5 ; 18:15 ; 36:30

Step-by-step explanation:

6/5 = x/15

5x = 6(15)            use cross multiply

5x = 90

x = 18

6/5 = 36/x

6x = 5(36)            use cross multiply

6x = 180

x = 30

Answer:

Answer below

Step-by-step explanation:

For every 6 taxis, there are 5 busses

if there are 15 busses, thats 3 sets of 5

6x3 is 18. so for every 15 busses, there are 18 taxis

If there are 36 taxis, thats 6 sets of 6

since there are 5 busses for every 5 taxis

5x6 is 40

for every 30 busses, there are 36 taxis

Answer:

Original coordinates of F is (2,1)

Step-by-step explanation:

when DEFG is dilated by a scale factor of 1/2 with a dilation center of (0, 0), coordinates of point F' will be

( 2 x 1/2, 1 x 1/2 ) = ( 1, 1/2 )

Answer:

a) 10%

b) 80%

c) 20%

Step-by-step explanation:

I hope that is useful for you :)

Answer:

9+(2/x)

Step-by-step explanation:

Answer: 3/4x

Step-by-step explanation:

y = mx + b

m = slope b = y - intercept

y= 3/4x -3

Answer:

X = 15

Step-by-step explanation:

Let's solve your equation step-by-step.

−18+x=−x+12

Step 1: Simplify both sides of the equation.

x−18=−x+12

Step 2: Add x to both sides.

x−18+x=−x+12+x

2x−18=12

Step 3: Add 18 to both sides.

2x−18+18=12+18

2x=30

Step 4: Divide both sides by 2.

2x/2 30/2 = 15

Answer:

What percent of 9 is 18 = 200% and for the second part it is B.

Step-by-step explanation:

I just know that is the answer.

Answer:

8/13

Step-by-step explanation:

4=4/1

4/1*2/13=8/13 can't be more simplified.

Please mark brainliest I need it

Answer:

216 is the surface area

Step-by-step explanation:

48+48+48+48+12+12

Answer:

72

Step-by-step explanation:

80x.90= 72

Answer:

72 is your answer

Step-by-step explanation:

Answer:

105 for 3 hours

Step-by-step explanation:

First we have to find that how much he is charged for 1 hour.

140 : 4 = 35 per hour

Then we have to find how much he is charged for 3 hours by multiplying with 3.

3 x 35 = 105 per 3 hours

Answer:

£105

Step-by-step explanation:

let y represent the unknown amount

£150 = 4 hrs

y = 3 hrs

we then cross multiply

£150 x 3 hrs = y x 4 hrs

450= 4y

divide both sides by 4

450/4 = 4y/4

105 = y

Answer:

41 years approx

Step-by-step explanation:

Given data

P=  £3000

R=3%

Simple Interest= £3720

Time=???

We know that from the simple interest expression

SI= PRT/100

substitute

3720= 3000*3*T/100

Make T subject of the formula

T= 3720*100/3000*3

T= 372000/9000

T= 41.33

Hence the number of years is 41 years approx

Answer:

Step-by-step explanation:

x > -7

Open circle means the solution does not include -7 and it is more than -7

For the first one its a slope of -2/3

The second one is 4/5

and the third one is -1/7

Answer:

Not probabillity of picking a green marble is 80%

Step-by-step explanation:

Answer:

.80 or 4/5

Step-by-step explanation:

Probability is all about figuring out what you are or not going to get.

One good trick of figuring this out is taking what you don't want, (here its green marbles) take them out, then add all the marbles (G,B,R) and divide. Here you are dividing 8 by 10 which comes out to .80

The only other thing to do is simplify if needed. .80 turns into 8/10 and the only thing that 8 and 10 are divisible by is 2 so it would turn into 4/5

Hope this info can help ;)

Answer: the answer is 8 and 3

Step-by-step explanation:

factors are numbers that can be multipiled together to find a whole number. since 8 and 3 are being multiplied together to get 24, 8 and 3 are factors of 24.

I hope this helps ! good luck

Answer:

I think it's 15

Step-by-step explanation:

Volume is basically just adding length, width, and height