Mathematics College

What is have of the number 21?

Answers

Answer 1

Answer:

Step-by-step explanation:

you now aswer to that question yes or no

Related Questions

pls help thannnnkkkss <33

Answers

Answer: You would put the parentheses here 24 divided by 6 x 2 - (1 +4)

Have a nice day!

50 persons 2 glass. Each glass 150 milliliter. How many liters

Answers

Answer:

1.5 liters

Step-by-step explanation:

300 mL per person

50 people

300 x 50 = 1500

1500 mL = 1.5 L

The winter clothing drive has received donations of 5 coats,23 pairs of gloves, 19 scarves, and 3 hats so far.

Answers

Answer:

0.54 percent chance

Step-by-step explanation:

5+23+19+3=50

=54

A developer is building a scale model of the city. From the roof of an apartment complex, the developer points two lasers at the taller office building across the street. The first laser points to the base of the building and the second laser points to the top of the building. The first laser beam has an angle of depression of 36° and is 155.7 feet long. The second has an angle of elevation of 32° and is 148.6 feet long. How tall is the office building? How far apart are the apartment complex and the office building? Round your answers to the nearest foot.

Answers

Answer:

a. 170 ft b. 126 ft

Step-by-step explanation:

a. How tall is the office building?

The two laser lights with the length of the taller office building, L form a triangle with sides 155.7 feet, 148.6 feet and L with angle 36° + 32° = 68° facing the taller office building.

We use the cosine rule to find the length of taller office building.

So, L² = 155.7² + 148.6² - 2(155.7)(148.6)cos68°

L² = 24242.49 + 22081.96 - 46,274.04(0.3746)

L² = 46324.45 - 17334.56

L² = 28989.89

L = √28989.89

L = 170.26 ft

L ≅ 170 ft

b. How far apart are the apartment complex and the office building?

Using one of the lights, the distance between the buildings, d, the laser light(being the hypotenuse side) and the building (being the opposite side)form a right angled triangle.

So, using the 155.7 feet light at 36 angle,

cos36 = d/155.7

d = 155.7cos36

d = 155.7(0.8090)

d = 125.96 ft

d ≅ 126 ft

PLS HELP!!!
Find the area of the triangle below.
Be sure to include the correct unit in your answer.
6 yd
13 yd
17 yd

Answers

Answer:

Step-by-step explanation:

What is the volume of a cube with a side length that measures 1 1/2 ft? Enter your answer in the box.

Answers

9514 1404 393

Answer:

3 3/8 ft³

Step-by-step explanation:

The volume of a cube is the cube of the side length.

V = s³

V = (1.5 ft)³ = 3.375 ft³ = 3 3/8 ft³

help me plzz
4X + 24 - X + 5 ≤ 62

Answers

Answer:

Combine like terms:

3x + 29 ≤ 62

-29 -29

3x = 33

Divide by 3 on both sides.

x = 11!

Answer:

x is 11

Step-by-step explanation:

4X + 24 - X + 5 ≤ 62

24 + 5

is 29

29-3x ≤ 62

-3x ≤ 33

Plug in x into the equation. Take x= -2 for example. Your equation is 2x-5, so instead of x, you put -2.
2(-2)-5 = -9
Your table is as follows:
(-2,-9)
(-1,-7)
(0,-5)
(1,-3)

HELP ME ASPA!!!!!
Round your answer to the nearest hundredth.
AC=

Answers

Hello :) ok so to find AC you would have to use sin. It would be sin70= x/4. To find AC you would have to multiply 4 by sin70 which is 3.758 or to the nearest hundredth would be 3.76. I hope I helped, if you need a more in depth explanation lmk

What do patterns do you notice about finding the area of a triangle?

Answers

Step-by-step explanation:

heres the formula A=12b(base)h(hight)

Answer:

Step-by-step explanation:

It has (1/2) included in the formula to find area

Laura is bowling 5 games. Her first 4 scores were 103, 143, 101, and 110.
To end up with an average score of at least 126.8, what is the lowest score Laura will need in the fifth
game?

Answers

Answer:

The least 5th score is 177

Step-by-step explanation:

Given

[tex]First\ 4: 103, 143, 101, 110.[/tex]

[tex]Average = 126.8[/tex]

Required

The least 5th score

Represent the 5th score with x.

The average is calculated as:

[tex]Average = \frac{\sum x}{n}[/tex]

So, we have:

[tex]126.8 = \frac{103 + 143 + 101 + 110 + x}{5}[/tex]

[tex]126.8 = \frac{457 + x}{5}[/tex]

Multiply both sides by 5

[tex]634= 457 + x[/tex]

Solve for x

[tex]x = 634- 457[/tex]

[tex]x = 177[/tex]

Please ASAP! All I know is that the pH is 3

Answers

Answer:

Step-by-step explanation:

this is simply logarithm

3 = -log(H)

-3 = log H

H= 10^-3

H= 0.001

A man earns 15000 in a month. if he spends 20% on food and 10% in his children's education.
a) what is his total expenditure?
b) how much does he save in a month?

Answers

Step-by-step explanation:

Total money=15000

food=20%

edu.=10%

food AMT=20% of 15000

=20/100*15000

= 3000

education AMT= 10/100*15000

=1500

savings = 15000-1500-3000

=Rs10500

total expenditure=1500+3000

=4500

If f(x) = x3 – 2x2, which expression is equivalent to f(i)?
0-2 + 1
O-2-1
O
2 + 1
O 2-1
PLS HELP

Answers

Answer:

[tex]2 - i[/tex]

Step-by-step explanation:

Substitute i for x. Remeber i means imaginart number.

[tex] {i}^{3} - 2 {i}^{2} [/tex]

Use the Imaginary number exponents rules

[tex] {i}^{2} = - 1[/tex]

[tex] {i}^{3} = - i[/tex]

[tex]i {}^{4} = 1[/tex]

Simplify the equation.

[tex] - i - ( - 2)[/tex]

[tex] - i + 2[/tex]

Write as a complex number in form a+bi

[tex]2 - i[/tex]

1. Which of the following equations would not
contain the point (4, 12)?

A.y = 2X + 9

B.y = -2x + 14-x1

C. y = 2x + 8

D. y = -2x + 20

Answers

I think it’s “c” y=2x+8

IF YOU AWNSER THIS ILL GIVE U 5$

Answers

Answer:

choose 1 ball from a bag with 1 red ball and 4 white balls

Step-by-step explanation:

If one leg of a right triangle is 4/7 and the hypotenuse is 10/6, then the other leg is

Answers

A right triangle has two legs and a hypotenuse
a = shorter leg
b = longer leg
c = hypotenuse
We know b-a=4, or b = a+4

The Pythagorean theorem states:
a2 + b2 = c2

a2 + (a+4)2 = c2
a2 + (a+4)2 = 80
a2 + a2 + 8a + 16 = 80

Combine terms
2a2 + 8a - 64 = 0

Divide by 2
a2 + 4a - 32 = 0

Factor
(a+8)(a-4) = 0
a = 4, -8

We throw out the -8 solution because we can't have a negative measure.

So a = 4
b = 8
c = √80 = 4√5

The legs are 4 and 8.

The area of the shape is [ ]
square meters.
(50 points ^^)

Answers

Answer:

44m²

Step-by-step explanation:

GIVEN :-

Lengths of all the sides of the figure.

TO FIND :-

Area of the figure

SOLUTION :-

Divide the whole figure into 2 rectangles.

Dimension of 1st rectangle = 6m × 2mDimension of 2nd rectangle = 8m × 4m

Area of 1st rectangle = 6 × 2 = 12m²

Area of 2nd rectangle = 8 × 4 = 32m²

∴ Area of the whole figure = 32 + 12 = 44m²

Solve the question below.
A + C =5
C + D = 4
C - A = 1
What is D + A?

Answers

Answer:

Answer:

B) 289 C) 29 D) 7.28 (round as necessary) E)400 F) 7.81 (round as neccessary) G) 10 H) 3.31 (round as neccessary)

Step-by-step explanation:

Here is what you use to find the LONG SIDE ONLY

Pythagorean Theorem: A squared + B squared = C squared. After this, find the square root of C using a radical.

Answer:

B = 17

C= 29

D= 7.28

E= 20

F= 7.81

G= 10

H= 3.32

Step-by-step explanation:

c=a2+b2

9. Find the measure of angle
a
36°
57°

Answers

Answer:

no clue bro

Step-by-step explanation:

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