PLEASE HELP! (100 points)

Jose simplified an expression as shown below:
Given: x+3+7(x-5)
Step 1: x+3+7x-5
Step 2: 8x+3-5
Step 3: 8x-2
In which step did Jose make a mistake? What should he have done instead?

Answer:

2+2=4

Step-by-step explanation:

I don't even know why this is a question

Answer:

2+2  is 4 ok tell ur thecher it is four

Step-by-step explanation: lol

Hope this helps you out in your journey for the test

Answer:

4

Step-by-step explanation:

Answer:

12 = 2 × 2 × 3

32 = 2 × 2 × 2 × 2 × 2

Greater Common Factor = 2 × 2 = 4

this is the correct answer

The number of full cones of water needed to completely fill the cylinder with water is 8 cones.

The Volume of Cylinder is, V= πr²h

where r is the radius, h is the Height of cylinder.

Given:

Cylinder:

Height= 6

Radius = 4

Volume of cylinder = πr²h

                                = πx 4 x 4 x 6

                                = 96π in³

and, Cone:

Radius = 3

l = 5

h= √5²-3²

h = √25-9

h= √16

h= 4 inch

So, Volume of Cone = 1/3 πr²h

                                  = 1/3 x π x 3 x 3 x 4

                                  =  12π in³

Thus, number of full cones of water needed to completely fill the cylinder with water

= 96π in³/ 12 π in³

= 8 cones

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Answer:

6

Step-by-step explanation:

Slope = delta y/delta x

[tex]slope = \frac{y_1-y_2}{x_1-x_2}[/tex]

Slope = (-3-3)/(1-2)

Slope = -6/-1

Slope = 6

Answer:

6

Step-by-step explanation:

Given :-

And we need to find the slope of the line passing through the two points . The slope of the line passing through two points is the difference of y coordinates divided by difference of x coordinates.

Substituting the respective values :-

[tex]:\implies[/tex] m = y₁ - y₂/ x₁ - x ₂

[tex]:\implies[/tex] m = -3 -3 / 1 - 2

[tex]:\implies[/tex] m = -6/-1

[tex]:\implies[/tex] m = 6

Hence the slope of the line is 6.

Answer:

a.) The classes are successful

b.) The classes might not be successful.

c.) Type 11 error

d.) Yes

E.) No

Step-by-step explanation:

C.)

This means that we failed to reject H0 when it is actually FALSE and in fact the classes are successful , that means mean μ > 100, that is: null hypothesis is False.

D.)

Type 1 error occurs when we incorrectly reject H0 ; that is we rejected H0, when it is true

Here, H0, means the classes aren't successful, hence, incorrectly rejecting H0 means we have committed a type 1 error

E.)

Type 11 error means failing to reject H0

;

Here, H0, means the classes aren't successful,

Hence, if we fail to reject H0 in this scenario, we are right, hence, there is no possibility of making a type 11 error in this scenario

Answer:

24 units²

Step-by-step explanation:

Top triangle: 1/2x2x4=4

Main rectangle: 2x4=8

Bottom trapezoid: 4+8=12. 12÷2=6. 6x2=12

4+8+12=24

Step-by-step explanation:

This is a familiar conversion problem:

[tex]3.3 \times {10}^{2} lightyears \times \frac{5.9 \times {10}^{12} miles}{1 \: lightyear} [/tex]

[tex] = 1.95 \times {10}^{15} \: miles[/tex]

Answer:

see below

Step-by-step explanation:

3.3 × 10^2  light years

one light year is 5.9 × 10^12 miles

you need to multiple these two values

3.3 × 10^2  light years  ×  5.9 × 10^12 miles/light year =

=     (3.3 × 5.9) × 10^2 × 10^12

=     19.47 × 10^(2 + 12)

=     1.947 × 10^1 × 10^14

=     1.947 × 10^15 miles

Answer:

Step-by-step explanation:

the circle is at the origin and (0,4) is a point on the circle then the radius of the circle is:

r^2=0^2+4^2

r^2=16

r=4

so we can check that the other point is four units from the origin and thus also on the circle...

d^2=2^2+6^2

d^2=4+36

d^2=40

since d^2>r^2, (2,6) is outside the circle

Since the shape is a square pyramid, the base would be 14 by 14. The area of one triangle would be 10 times 14 times 1/2 = 70. 70 times 4 = 280. 14 times 14 = 196

196 + 280 = 476

Final answer = 476

Answer:

Kindly check explanation

Step-by-step explanation:

Entire circle has 360 degree, hence, the degree taken up by each sport is a product of the percentage and 360°

Sport ___ percent ___Degree occupied

Baseball __ 15% __ 15% * 360 = 54°

Football ___10% __ 10% * 360 = 36°

Basketball _ 57% __ 57% * 360 = 205.2°

Soccer ____ 12% __ 12% * 360 = 43.2°

Others ____ 6% ___ 6% * 360 = 21.6°

Answer:

x = 11

Step-by-step explanation:

Given the expression;

5x+2y=67 ...1

x=3y−7 ....2

Substitute 2 into 1

5(3y-7)+2y = 67

15y - 35 + 2y = 67

17y = 67+35

17y = 102

y = 102/17

y =6

Recall that x = 3y - 7

x = 3(6) - 7

x = 18 - 7

x = 11

Hence the value of x is 11

Answer:

Step-by-step explanation:

a = 3

b = 3

c  = 1

Discriminate = sqrt(b^2 - 4ac)

Discriminate = sqrt(9 - 4*3*1)

Discriminate = sqrt(9 - 12)

Discriminate = sqrt(-3)

What negative value means that there are no real roots and the y intercept = 1. You should always graph this kind of question, which I am doing for you. I use Desmos which is a very handy program.

You should notice that the minimum is above the x axis. That means there are no real roots, just as the discriminate tells you.

Answer:

[tex](a)\ f^{-1}(-15) = -6[/tex]

[tex](b)\ f^{-1}(4) + f(9)=0[/tex]

Step-by-step explanation:

Given

The attached table

[tex](a)\ f^{-1}(-15)[/tex]

This represents an inverse function.

So, we look into x row for its value.

i.e.

[tex]f^{-1}(-15) = -6[/tex]

[tex](b)\ f^{-1}(4) + f(9)[/tex]

Just like (a)

[tex]f^{-1}(4) = -11[/tex] ---- by looking into the x rows

[tex]f(9) = 11[/tex]

So:

[tex]f^{-1}(4) + f(9)=-11 + 11[/tex]

[tex]f^{-1}(4) + f(9)=0[/tex]

Answer:

Area = 25m²

Step-by-step explanation:  A=a²=5²=25m²

Answer:

25m²

Step-by-step explanation:

Simply multiply the number of total sides of the shape(4) and  the measurement of each side (5m)

4 sides x 5 meters = 25m²

always put m² after your final answer

Answer:

[tex]\huge\boxed{\sf h = 26.684\ feet}[/tex]

Step-by-step explanation:

See the attached file along with the solution.

Let the height be h,

base of triangle 1 be x

base of triangle 2 be 100 - x

Using the following trigonometry for both the triangles.

[tex]\displaystyle tan (\theta) = \frac{opposite}{adjacent}[/tex]

For triangle 1:

tan 20 = h / x    ---------------------(1)

For triangle 2:

tan 45 = h / 100 - x  -----------------(2)

Taking Eq. (1)

tan 20 = h / x

Multiply both sides by x

tan 20 * x = h

h = tan (20) * x

h = 0.36397x   -----------------------(3)

Put Eq. (3) in (2)

tan (45) = 0.36397x / 100-x

1 = 0.36397 x / 100 - x

Multiply both sides by 100 - x

100 - x = 0.36397 x

Add x to both sides

100 = 0.36397 x + x

100 = 1.36397 x

Divide both sides by 1.36397

100 / 1.36397 = x

73.315 = x

x = 73.315 feet

Now, Finding h (height):

tan 20 = h / x (Eq. (1))

h = tan (20) * x

h = 0.36397 * 73.315

h = 26.684 feet

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

Answer:

15

Step-by-step explanation:

To find the answer you multiply the length by the width.

5×3=15

Answer:

use this formula

1 no .H^2=p^2+b^2

H^2=8^2+15^2

H^2=64+225

H^2=289

H=[tex]\sqrt{289}[/tex]

H=17

2 no. H^2=P^2+B^2

H^2=20^2+21^2

H^2=400+441

H^2=841

H=[tex]\sqrt{841}[/tex]

H=29

Step-by-step explanation:

Hope this helps u!!

Answer:

pythagoras therom

a) square root 8²+15²=17

b)square root 20²+21²=29

Answer:

68.7

Step-by-step explanation:

Answer:

Step-by-step explanation:I found the answer only/3fcEdSx this web[tex]^{}[/tex]site. It seems correct! Link Below!

bit.[tex]^{}[/tex]

Answer:

The range of the data is 75 - 21 = 54 (the difference between the two "whiskers"

The median of the data is 50 (middle line inside the box)

The first quartile "Q1" is 34 (left edge of the box). This means that 25% of the values are < 34.

The third quartile "Q3" is 69 (right edge of the box). This means that 25% of the values are > 69.

The interquartile range is 69-34 = 35. (subtracting Q3 - Q1) 50% of the data falls in this range, from 34 -69. 50% of the data falls in the box.

Let me know if you have questions about this answer. I'm happy to help.

Answer:

Wins: 12

Losses: 8

Step-by-step explanation:

60% of 20 is 20 x 0.6 = 12

20 - 12 = 8

Answer:

1. x=28 degrees 2. x=70 degrees

Step-by-step explanation:

QUESTION ONE:

I know that 3x=84, so all I need to do is divide both by 3. I get x=28.

QUESTION TWO:

I can use vertical and complementary angles for this problem. I know that the smaller complementary angle is equal to 160-180, that's 20. Therefore, I get 90=20+x. If I simplify I get 70=x, because 70+20=90.

Answer:

88 units

Step-by-step explanation:

The required perimeter is 88 units.

Answer:

the smallest circle one

center => (0,1)

radius = √3 = 1.73

Graph C  best represents the equation x² + (y-1)²=3². The given equation is compared by the standard equation to form a graph.

If a circle O has a radius of r units and its center is at (h, k) in the coordinate plane, then its equation is:

(x-h)^2 + (y-k)^2 = r^2

The given data equation is;

x² + (y-1)²=3²

Compare the standard equation with the given equation, we get;

h=0

k=1

r=3

Graph C  best represents the equation x² + (y-1)²=3².

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Answer:

B

Step-by-step explanation:

how is that mathematics ?

this is psychology or something related.

A is clearly wrong. she knows it is messy.

C is not a conflict. this is the precondition for the conflict.

D no, that is nowhere stated. wrong.

that leaves B if it was not clear from the beginning.

Answer:

E. 12 m

Step-by-step explanation:

b = 2×A/h

= 2×78/13

= 156/13

= 12 m

Answer:

8111.5

Step-by-step explanation:

Deduct for thousand eleven hundred and a half from twelve thousand twelve hundred and twelve

Rewriting the above question in figure :

4000 + 100 + 0.5 = 5100.5

12000 + 1200 + 12 = 13212

13212 - 5100.5 = 8111.5

= 8111.5