Help me pls ........................
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Answer:

X=10

Y=-2

Step-by-step explanation: The value of X is given therefore you use it to find the value of Y in the equation:

3(10)+5y=20

5y=20-30

5y=-10

5y/5=-10/5

5 is cancelled out leaving y=-2

I hope this helps. :)

The inequality of the width of the desk must be less than 4 ft is w < 4.

It shows a relationship between two numbers or two expressions.

There are commonly used four inequalities:

Less than = <

Greater than = >

Less than and equal = ≤

Greater than and equal = ≥

We have,

Inequalities are mathematical statements that compare two expressions using symbols like "<" (less than), ">" (greater than), "<=" (less than or equal to), ">=" (greater than or equal to), or "!=" (not equal to).

In this case, the problem states that the width of the desk must be less than 4 ft.

We can use the symbol "<" to indicate that the width (w) is smaller than 4 feet. Therefore, we can write the inequality as w < 4, which means that any value of w that is less than 4 feet satisfies the given condition.

Thus,

The width of the desk must be less than 4 ft is w < 4.

Learn more about inequalities here:

https://brainly.com/question/20383699

#SPJ2

Step-by-step explanation:

The significance level, also denoted as alpha or α, is the probability of rejecting the null hypothesis when it is true. For example, a significance level of 0.05 indicates a 5% risk of concluding that a difference exists when there is no actual difference

w(t) tells you the amount of water w at a given time t.

The inverse function tells you at which time t the tank contains an amount of water w.

To get the inverse function, solve the equation

w = 80 - 2.8t

for t :

w = 80 - 2.8t

2.8t = 80 - w

t = (80 - w) / 2.8

t ≈ 28.57 - 0.357 w

The graph of w(t) is a downward-sloping line. The graph of the inverse is also a downward-sloping line, but its intercept (28.57) and slope (-0.357) are both smaller than the intercept and slope of w(t).

Answer:

The real distance that 18 centimeters represent is 45 kilometers.

Step-by-step explanation:

In this case, you can use a rule of three to find the real distance that 18 centimeters represent given that 4 centimeters represent 10 kilometers:

4 cm    →    10 km

18 cm   →        x

x=(18*10)/4

x=45 km

According to this, the answer is that the real distance that 18 centimeters represent is 45 kilometers.

Answer:

63 ÷ 84 = 0.75 // 75% // 3/4

Step-by-step explanation:

63 divided by 84 equals 0.75, 75%, or 3/4. meaning the probability of Mike making his next free throw 75%

Answer:

it is the first one

Step-by-step explanation:

if right give brainliest

Answer:

121.21 people per square mile

Step-by-step explanation:

area = 1/2(12 + 21)(14) = 231 mi²

28,000/231 = 121.21 people per square mile

Answer:

2. 7/4

3. D

4. -25/77

5. -3

Step-by-step explanation:

Answer:T he bird will land at a radios of 20 feet in th air.

Step-by-step explanation: The object is falling 380 feet out of the air out of 400.

Answer:

The answer is below

Step-by-step explanation:

a) The recipe for the meat loaf used by Jenny can serve a total of 8 people. Since there are 40 people in total to serve, the number of each ingredient needed is:

Number of each ingredient = total number of people / number of people served by one recipe

Number of each ingredient = 40 / 8 = 5

b) Since each recipe contains 1 1/2 lb (1.5 lbs) of ground beef, the total amount of ground beef needed to feed everyone is:

Total amount of ground beef = 1.5 lbs * 5 = 7.5 lbs

c) Since one serving would require 8 oz of milk. To serve everyone, the amount of milk needed is:

Amount of milk = 40 people * 8 oz = 320 oz

128 oz = 1 gallon

Amount of milk = 320 oz * 1 gallon / 128 oz = 2.5 gallon

The quantity of the recipe needed for a given number of people is found

by a multiple of the recipe for 8 people.

Reasons:

The total number of people at the party = 40 people

The number of people the recipe serves = 8 people/recipe

First question:

The number Jenny should multiply the ingredient to make enough for everyone is [tex]\mathbf{\dfrac{40 \ people}{8 \, people \, per \, recipe}} = 5 \times Recipe[/tex]

Therefore;

To make enough meat loaf for everyone, Jenny should multiply each ingredient by 5.

Second question:

The amount of ground beef required = [tex]1\frac{1}{2}[/tex] lbs.

Amount of ground beef required for everyone = 5 × [tex]\mathbf{1\frac{1}{2}}[/tex] lbs = 7.5 lbs.

Third question:

The volume of each glass of milk Jenny is serving = 8 oz.

The number of glasses of milk Jenny need = 40 glasses

The volume of the 40 glasses = 40 × 8 oz. = 320 oz.

Volume of one gallon (imperial) = 160 fluid ounce = 160 oz.

Therefore;

320 oz = 2 × 160 oz. = 2 × 1 gallon = 2 gallons

The number of gallons of milk Jenny needs to make sure everyone gets

one glass of milk is 2 gallons of milk.

Learn more here:

https://brainly.com/question/16154116

Answer:

D) 36π[tex]a^6b^9[/tex]

Step-by-step explanation:

Volume of a sphere:

V = 4/3πr³

Given:

r = 3a²b³

Work:

V = 4/3πr³

V = 4/3π(3a²b³)³

V = 4/3π(27[tex]a^6b^9[/tex])

V = 36π[tex]a^6b^9[/tex]

Answer:

Step-by-step explanation:

Sorry I didn't mean to do that.

Answer:

Step-by-step explanation:

See ratios and step changes below

Answer:

809.69

Step-by-step explanation:

747.98(.0825)=61.708

747.98+61.708=809.688

Answer:

Area; inside; centimeters; meters.

Step-by-step explanation:

Area is the amount of space inside a two-dimensional shape. It can be measured in units such as centimeters or meters.

In Mathematics, it is typically used to measure the amount of space contained in two-dimensional shapes such as a square, rectangle, circle, sphere, etc.

Consider the area of the following shapes;

I. The area of a circle = πr²

Where, r is the radius of the circle.

II. Area of square = L²

Where, L is the length of its sides.

III. Area of rectangle = Length * width.

Answer:

Area; inside; centimeters; meters.

Step-by-step explanation:

Area is the amount of space inside a two-dimensional shape. It can be measured in units such as centimeters or meters.

Answer:

300

Step-by-step explanation:

25×8= 200 spent

500-200=300 left

Answer:

=> $300

Step-by-step explanation:

here's your solution

=> Amount of money Trent has = $500

=> Amount spent by him in one week = $25

=> Amount left with him after 8 weeks =

= $500 - ($25*8)

=> $500 - $200

=> Amount left = $300

hope it helps

Answer:

A

To solve this find the LCM of 6, 5 and 10

They will all meet after every 30 min

B

C

Answer:

12

Step-by-step explanation:

Answer:

9 kids tickets

Step-by-step explanation:

Let k = no. of kid's tickets

12 - k = no. of adult's tickets

9.50(12 - k) + 6.50k = 87

95(12 - k + 65k = 870

1140- 95k + 65k = 870

- 30k = -270

k = 9 kids

Answer:

6 | 3

30 | 15

40 | 20

56 | 28

Step-by-step explanation:

You need to find out how many spring rolls will feed a single person

[tex]\frac{6}{3}=2[/tex]

then use this to multiply by two if you want number of rolls, or divide by two if you want to get number of people that can be fed.

Answer:

26.56300     1.97700

Step-by-step explanation:

You add up all of them which was 26.5630 then you do 7.1-5.123+1.97700

Answer:

Step-by-step explanation:

Given,

Distance Noah ran = 5.123 miles

Distance Andre ran = 6.34 miles

Distance Jada ran = 7.1 miles

Distance Diego ran = 8 miles

Hence,

a. Total running distance of four runners

= (5.123 + 6.34 + 7.1 + 8) miles

= 26.563 miles (Ans)

b. Distance more ran by Jada than Noah

= (7.1 - 5.123) miles

= 1.977 miles (Ans)

Answer: ?=28

Step-by-step explanation: 35/7=5

                                             49/7=7

                                              28/7=4

126

Step-by-step explanation:

hdhfgdhdgdhdhrgdgdgdhdgdhdhdh

Answer:

There are two colors and 8 numbers.

One color is represented by 3 numbers 2, 3, 7

The second color is represented by 5 numbers 1, 4, 5, 6, 8

Answer:

sin B = 4/5

Step-by-step explanation:

sine is opposite over hypotenuse