Maya's current average after 3 tests is 87. what must Maya score on her fourth test so that her average is 90?

A)9
B)89
C)90
D)93
E)99

Answer:

108/43

Step-by-step explanation:

[tex](6\frac{2}{3}-\frac{2}{3}) : (\frac{8}{9}+1\frac{1}{2}) =[/tex]

[tex]= 6 : (\frac{16}{18}+\frac{3}{2}) =[/tex]

[tex]= 6 : (\frac{16}{18}+\frac{27}{18}) =[/tex]

[tex]= 6 : (\frac{43}{18}) =[/tex]

[tex]= 6 * \frac{18}{43} =[/tex]

[tex]= \frac{108}{43}[/tex]

Answer:

side length of the triangle

Step-by-step explanation:

The perimeter of a triangle is the sum of the sides

For an equaliateral triangle all sides are the same length

if x = length

perimeter = x + x + x = 3x

Answer:

side length of the triangle

Step-by-step explanation:

The perimeter of a triangle is the sum of the sides

For an equaliateral triangle all sides are the same length

if x = length

perimeter = x + x + x = 3x

Answer:

5 cups of flour need to make two cakes

Answer:

a = 10

d = 5

Step-by-step explanation:

[tex]a_{n}=a + (n-1)d\\\\a_{5}=30\\\\a + (5-1)*d=30\\\\[/tex]

a + 4d = 30 ------------------(I)

[tex]a_{13}=70\\\\a + (13-1)d=70[/tex]

a + 12d =70 -------------(II)

Multiply equation (II) by (-1) and then add.So, 'a' will be eliminated and you can find the value of d

(I)         a +   4d = 30

(II)*(-1)   -a - 12d = -70   {Now add}

               - 8d   =  - 40

Divide both sides by (-8)

d = -40/-8

d = 5

Plugin d = 5 in equation (I)

a + 4*5 = 30

a + 20 = 30

a = 30 - 20

a = 10

With the help of a helpful website...

a = √(c² - b²)

a = √(3² - 2²)

a = √(9 - 4)

a = √(5)

x = √(c² - b²)

x = √((√(5))² - 2²)

x = √(5-4)

x = √(1)

x = 1! YOU WERE RIGHT!

Answer:

- 8

Step-by-step explanation:

x = - 10

y = 2

I x I

= I - 10 I

= 10

y - I x I

= 2 - 10

= - 8

Answer:

11(2) - |-10|

= 22 - |-10|

=32

Answer:

i) good luck

Step-by-step explanation:

Answer:

394

Step-by-step explanation:

Surface area of a sphere=4πr^2

4*pi*5.6^2=394.08

Answer:

394

Step-by-step explanation:

Answer:perpendicular bisector of the line segment joining the points A(5,2) and B(4,2).

Step-by-step explanation:

Answer:

p = - 5

Step-by-step explanation:

( [tex]x_{1}[/tex] , [tex]y_{1}[/tex] )

( [tex]x_{2}[/tex] , [tex]y_{2}[/tex] )

m = [tex]\frac{y_{2} -y_{1} }{x_{2} -x_{1} }[/tex]

~~~~~~~~~~~~~

( 3 , p )

( 2 , 2 )

m = - 7

[tex]\frac{2-p}{2-3}[/tex] = - 7

2 - p = - 7 ( - 1 )

2 - p = 7

p = - 5

Answer: C

Step-by-step explanation: the key is to look at the relationships between the numbers. The y value increments by 5.5 or 5 respectively, which LOOKS like additive. However, it is actually multiplicitve, since the question is the relation between X and y, not the y values. From there you can simply test that 5x1=5, 5x2=10, etc, etc.

Answer:

The answer is C

Step-by-step explanation:

25^2 = 625

20^2 = 400

625+400 = 1025

sqrt(1025) is the answer

Answer:

[tex]y=\frac{1}{2}x-1[/tex]

Step-by-step explanation:

To find the equation of the line you will use the slope-intercept formula [tex]y=mx+b[/tex]

[tex]slope=m=\frac{rise}{run}[/tex]

Answer:

Step-by-step explanation:

1) Area of triangle= 1/2 x b x h

b = 7.6cm h= 3.4cm

Area= 1/2 x 7.6 x3.4 = 12.92cm²

2)Divide the shape into a triangle and a rectangle

Area of rectangle : l x b

L= 20cm, b= 7cm

= 20 x 7 = 140 cm²

Area of triangle =1/2 x b xh

B = 20cm, h= 16 - 7 = 9cm

1/2 x 20x 9= 90cm²

Total area = 140 + 90 = 230cm²

3) area of triangle = 1/2 x b x h

B = 12cm, h= 5cm

= 1/2 x 12 x 5 = 30cm²

4) area of triangle = 1/2 x b x h

B = 15cm, h= 8cm

= 1/2 x 15 x 8 = 60cm²

5) divide the shape into two rectangles; the lower and the upper

Area of rectangle= l x b

Upper rectangle, l= 10cm, b= 27 - 9 = 18cm

Area= 10 x 18= 180cm²

Lower rectangle, l= 24cm, b= 9cm

Area = 24 x 9= 216cm²

180 + 216 = 396cm²

Answer:

sorry hindi ko alam hirapuwu

Answer:

yes

Step-by-step explanation:

Answer:

yes

Step-by-step explanation:

I passed 7th grade with a B

Answer:

There is no picture you need to post the picture first

Answer:

Step-by-step explanation:

The probability of obtaining a red marble in one sample is 5/11. Since you are sampling twice the probability of picking a red marble both times is 5/11 x 5/11 = 25/121. That is slightly less than one time in five.

Answer: Less than 25%

Step-by-step explanation:

1. Find the difference of the two numbers: 1,207 - 957 = 250

decrease = original number - new number

2. Then, divide the decrease by the original number

250/1,207 = 0.207

3. Multiply the answer by 100 to get the percentage

0.207 x 100 = 20.7%

Therefore, the number of people fell by 20.7%

Hence, the answer is less than 25%

Answer:

Square lot and 187500

Step-by-step explanation:

To find question number A, we can calculate the area of each lot. The square plot is:

2/5×2/5=4/25

The first one is

2/3×3/8=1/4

Then we can make both have the same denominator:

1/4=25/100, 4/25=16/100

That means that the square lot is bigger.

We know that the area is 1/4 square mile. So it's 1/4 of 750,000

That's

1/4×750000=187500

Hope that helps! :)

Answer:

I think it is 24 cus it's more bigger and cooler and hotter and shorter and butter

Answer:

3 3/4

Step-by-step explanation:

Answer:

2 2/3

Step-by-step explanation:

[tex]4 \times \frac{1}{2} \div \frac{3}{4 [/tex]

Answer:

whats

Step-by-step explanation:

[tex]\orange{\rule{40pt}{555555pt}} \green{\rule{40pt}{555555pt}} \blue{\rule{40pt}{555555pt}} \red{\rule{40pt}{555555pt}}\pink{\rule{40pt}{555555pt}}\yellow{\rule{40pt}{555555pt}}[/tex]

Answer:

17

Step-by-step explanation:

[tex]60+2x=94 \\ \\ 2x=34 \\ \\ x=17[/tex]

Answer:

angle f ≈ angle m

Answer:

∠F=∠M

Step-by-step explanation:

They are corresponding angles.

Hope this helps!

x^3 + 2x^2 + x + 2 = (x^2 + 1) (x + 2).

Answer:

192 km

Step-by-step explanation:

80 km in 6 hours

N km in 2.5 hours

6/2.5 = 2.4

80 x 2.4 = 192

192 km