What’s the answer for this

Answer:

2.86

Step-by-step explanation:

So I'm pretty sure we don't want the probability, just the zscore

to find the zsore subtract the mean and divide by the standard deviation

(93-87)/2.1= 2.86

Answer:

the answer is given on the picture

Answer:

I dont understand that sorry

Answer:

5.65

Step-by-step explanation:

But if you need to round it would be 6.

Hope this helps!

Good Luck!

Answer:

2

Step-by-step explanation:

Average rate of change is

f(x2) - f(x1)

----------------

x2 -x1

We know x2 =2 and f(x2) = 5  

x1 = 1 and f(x1) = 3

Using the formula

5-3

-----------

2-1

2/1

2

Answer:

AC ≈ 11.0 cm

Step-by-step explanation:

Using Pythagoras' identity in Δ CDE and Δ ADE

CE² + DE² = DC²

CE² + 7² = 8²

CE² + 49 = 64 ( subtract 49 from both sides )

CE² = 15 ( take the square root of both sides )

CE = [tex]\sqrt{15}[/tex]

-------------------------------------------------------

AE² + DE² = DA²

AE² + 7² = 10²

AE² + 49 = 100 ( subtract 49 from both sides )

AE² = 51 ( take the square root of both sides )

AE = [tex]\sqrt{51}[/tex]

Then

AC = AE + CE = [tex]\sqrt{15}[/tex] + [tex]\sqrt{51}[/tex] ≈ 11.0 cm ( to the nearest tenth )

Answer:

8.7 cm

Step-by-step explanation:

take 60 degree as reference angle

using sin rule

sin 60=opposite/hypotenuse

[tex]\frac{\sqrt{3} }{2}[/tex]=opposite/10

[tex]\frac{\sqrt{3} }{2} * 10[/tex]=opposite

[tex]\sqrt{3} *5[/tex] = opposite

[tex]5\sqrt{3}[/tex] =opposite

8.66=opposite

8.7 =opposite

Answer:

1 1/4 yards

$20

Step-by-step explanation:

The amount of fabric more that she needs can be determined by subtracting the sum of the yards needed for the shawl and the dress from the fabric she has

sum of the yards needed for the shawl and the dress =

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

[tex]3\frac{2 + 3}{4}[/tex] = [tex]3\frac{5}{4}[/tex] = [tex]4\frac{1}{4}[/tex]

Yards needed

[tex]4\frac{1}{4} - 3[/tex] = [tex]1\frac{1}{4}[/tex]

cost of dance outfit = $16 x [tex]1\frac{1}{4}[/tex]

[tex]\frac{5}{4}[/tex] × $16  = $20

Answer:

8b=119.60

Step-by-step explanation:

8b=119.60

B=14.95

Answer:

$25

Step-by-step explanation:

-40 + 65 = 25

Hope this helps

Answer:

7/20

Step-by-step explanation:

Take the time for history assignment and subtract the time for her English assignment

3/5 - 1/4

Get a common denominator of 20

3/5 *4/4 = 12/20

1/4 * 5/5 = 5/20

12/20- 5/20

7/20

Given:

The figure of a right triangle.

To find:

The value of x.

Solution:

In a right triangle,

[tex]\tan \theta=\dfrac{Perpendicular}{Base}[/tex]

In the given right angle triangle,

[tex]\tan 52^\circ=\dfrac{x}{35}[/tex]

[tex]1.2799\times 35=x[/tex]

[tex]44.7965=x[/tex]

Approximate the value to two decimal places.

[tex]x\approx 44.80[/tex]

Therefore, the value of x is about 44.80 units.

Answer:

A. 5 × ( 3 + 2 + 2 1/4 )

Step-by-step explanation:

Hayden rode his bike 5 times. Each time, he biked a 3-mile path, a 2-mile path, and a 2 1/4 -mile path.

The expression represents the total number of miles he biked is calculated as:

The number of times he rode his bike × (sum of the number of miles he biked)

= 5 × ( 3 mile + 2 miles + 2 1/4 miles)

= 5 × (3 + 2 + 2 1/4)

Therefore, Option A is the correct option

Answer:

g(x) = 7(-x)³

Step-by-step explanation:

The cubic parent function is given as; f(x) = x³

Now, we are told that it reflects across the y-axis. This means that the new function will take the form;

g(x) = f(-x)

Thus, the new function is;

g(x) = (-x)³

Now,we are told that this new function stretches by multiplying by 7. Thus, we now have;

g(x) = 7(-x)³

Answer:

[tex]\frac{1}{6}[/tex]

Step-by-step explanation:

[tex]-\frac{12}{16} + \frac{11}{12}[/tex]

take lcm of the denominator

lcm=48

[tex]\frac{-12*3 + 11*4}{48}[/tex]

[tex]\frac{-36 + 44}{48}[/tex]

[tex]\frac{8}{48}[/tex]

[tex]\frac{1}{6}[/tex]

Answer:

[tex]=\frac{1}{6}[/tex]

Step-by-step explanation:

[tex]-\frac{12}{16}+\frac{11}{12}[/tex]

the lcm of 16 and 12 is 48

[tex]-\frac{12}{16} =-\frac{36}{48}[/tex]

[tex]\frac{11}{12} =\frac{44}{48}[/tex]

[tex]-\frac{36}{48} +\frac{44}{48}=\frac{8}{48}[/tex]

[tex]=\frac{1}{6}[/tex]

Hope this helps

Answer:

C = 4 pi ft

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

Solving for r

4 pi = pi r^2

Dividing each side by pi

4 = r^2

Taking the square root of each side

sqrt(4) = sqrt(r^2)

2 = r

Now we can find the circumference

C = 2 * pi *r

C = 2*pi*2

C = 4 pi ft

Step-by-step explanation:

the answer is 4 and 64

please give me brainliest

Answer:

v=24

Step-by-step explanation:

V= 3[tex]\sqrt{10^{2} - 6^{2} }[/tex]

V= 3[tex]\sqrt{100-36}[/tex]

V= 3[tex]\sqrt{64}[/tex]

V= 3×8

V= 24

Answer:

152 gallons

Step-by-step explanation:

76÷4=19

19x8=152

Answer:

152 miles

Step-by-step explanation:

76 x 2 = 152

Answer:

[tex]\displaystyle x=\frac{-1 \pm i\sqrt{535}}{2}[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Algebra II

Step-by-step explanation:

Step 1: Define

Identify

2x² + x + 67 = 0

a = 2

b = 1

c = 67

Step 2: Solve for x

Answer:

Base:3

Height:5

Area= 15

Step-by-step explanation:

Formula=BxH

3x5=15

Answer:

Yea sure its 102.5meters squared

Answer:

it's my own writing

I have done

please make me brainlist

Step-by-step explanation:

I hope this helps u

have a nice day ✌❤☘

Answer:

Third turn point = 21 points

Step-by-step explanation:

Given:

First turn point = 12

Second turn point = 15

Find;

Third turn point

Computation:

First turn point = 12

Assume;

Point for outer circle = a

Point for inner circle = b

So,

3a = 12

Point for outer circle = 4 point

Second turn point = 15

So,

2a + b = 15

2(4) + b = 15

Point for inner circle = 7

Third turn point = 3 x 7

Third turn point = 21 points

Answer:

cosP = 4/5

Step-by-step explanation:

cosP= b/h = b/√(b²+p²) = 24(√(24²+18²)= 24/30= 4/5

Answer:

4(19x + 42n + 15)

Step-by-step explanation:

Devi bought 7 skirts at $x each, n skirts at $12 each, (2n + 1) skirts at $15 each and 4 skirts at $3x each. Find the total cost of the skirts she bought.​

total cost of the skirt bought can be determined by adding the  total costs of each shirt bought

7 skirts at $x each = $7x

n skirts at $12 each = $12n

(2n + 1) skirts at $15 = (2n + 1) x 15 = 30n + 15

4 skirts at $3x each = $12x

7x + 12n + 30n + 15 + 12x

combine like terms

19x + 42n + 15