Mathematics College

Lisa's age is 4 years older than three times Sammy's age. Lisa is 28 years old. Let s represent Sammy's age. Which equation can be used to solve for Sammy's age?

Answers

Answer 1

Answer:

24

Step-by-step explanation:

let Sammy's age be x and Lisa y

since Lisa is 4years older than Sammy

y=x+4

28-4=y

y=24

Related Questions

$20,000 was invested in a 3-year simple interest money market account. After 3 years,
the account balance was $32,000.
What was the interest rate for the account?

Answers

Step-by-step explanation:

Amount = principal + S. I.

S. I. = p * t * r / 100

32000 = 20000 + 20000 * 3 * r / 100

12000 = 600 r

r ( Rate of interest) = 20 %

. When the process of solving a linear inequality results in the variable being eliminated with a false statement remaining, what does this mean about the solution set of the inequality?

Answers

Answer:

No Solution

Step-by-step explanation:

When we solve linear inequalities using any one the methods such as

1) Elimination  or

2) Substitution

And we get  the variable eliminated with a false statement remaining, this means there is no solution.

In other words the solution does not exist or the solution is not possible in the given range or the values given are false.

But when the values are true we get a solution for the variable solved.

In the elimination method we eliminate the same terms by addition or subtraction after making them equal.

And the substitution method requires putting the values of one variable in place of another.

Cheri paid $6.50 for the bunch of grapes with the weight of 2.5 pounds. What is the price per pound?

Answers

It would be $2.6 (or $2.60) per pound.

(7x+40)+(6x+43)=180 x? Z?

Answers

[tex](7x + 40) + (6x + 43) = 180\\7x + 40 + 6x + 43 = 180\\7x + 6x = 180 - 40 - 43\\13x = 97\\x = \frac{97}{13}[/tex]

I'm not sure what you mean by Z but x is [tex]\frac{97}{13}[/tex]

a. {1, 2, 3, 4, 5} = {x | x E N and x < 5}

True or False

Answers

Answer:

true

i just anwwsered this one in my lessons

the image is attached here.

Answers

There is nothing here

HELP!!! Need help with my home work!

Answers

Answer:

xy - y^2/x

Step by step explanation:

Can anybody please help me out with this problem I would really appreciate it so much . Please and thank you

Answers

"Supplementary" angles add up to 180°.

Opposite angles are supplementary, so . . .

(12x - 4) + (19x - 2)  =  180°

Clear the parentheses:  12x - 4 + 19x - 2 = 180°

Add up all the x's on the left side:  31x - 4 - 2  =  180°

Add up the plain old numbers on the left side:  31x - 6  =  180°

Add  6  to each side:  31x  =  186°

Divide each side by  31 :  x  =  6°

Well !  Now that you know that  x = 6° . . .

Angle  EPC  is  (12x - 4)°

That's  (12·6  -  4)°

Which is  (72 - 4)°

Which is  68°

3a − 2a + 4 = 16 Solve for a.

Answers

Answer:

a=12

Step-by-step explanation:

[tex]3a-2a+4=16\\\\(3a-2a)+4=16\\\\(3-2)a+4=16\\\\1a+4=16\\\\a+4-4=16-4\\\\a=12[/tex]

In an arithmetic progession T7 =20 and T13 =38,. Find the first term and the common difference. ​

Answers

The first term is two.
The common difference is three. Hope this helps!

Write a ratio for the following description: Kaleel made three times as many baskets as John during a basketball practice.

Answers

Answer:

3:1

Step-by-step explanation:

If John makes 3, Then Kaleel makes 9,  If John makes 1, Then Kaleel makes 3.

A mixed number can have the same value as an improper fraction. True False​

Answers

This Answer Is : True.

Answer:

true

Step-by-step explanation:

a mixed number can have the same value as an improper fraction but never as an proper fraction

A ____ is written as an if-then statement A.conjecture B.counterexample C.conditional D.negation​

Answers

Answer: C

Definition of a conditional:

A conditional statement is a statement that can be written in the form “If P then Q,” where P and Q are sentences. For this conditional statement, P is called the hypothesis and Q is called the conclusion. Intuitively, “If P then Q” means that Q must be true whenever P is true.

Find the inverse of s.
= {(-2, -7), (0, -3), (2, 1), (4, 5), (5, 7)}

Answers

Answer:

( − 7 , − 2 ) , ( − 3 , 0 ) , ( 1, 2 ) , ( 5 , 4 ) , ( 7 , 5 )

From: iOE Your friend

:D :) *Be awesome.Be You*

Bentley signed up for a streaming music service that costs $13 per month. The service allows Bentley to listen to unlimited music, but if he wants to download songs for offline listening, the service charges $0.75 per song. How much total money would Bentley have to pay in a month in which he downloaded 10 songs? How much would he have to pay if he downloaded s songs

Answers

Answer:

multiply 0.75 × 10 = 7..50

Please help with my music math

Answers

true
false
false
true
true
false
true
false
false
true

If 9 (x) = – 5x2 – 4x + 19 find f (–3)

Answers

Answer:

- 14

Step-by-step explanation:

[tex]f(x) = - 5 {x}^{2} - 4x + 19 \\ plug \: x = - 3 \\ f( - 3) = - 5 {( - 3)}^{2} - 4( - 3) + 19 \\ f( - 3) = - 5 \times 9 + 12 + 19 \\ f( - 3) = - 45 + 31 \\ f( - 3) = -14[/tex]

4x + y = 2
I need to solve the literal equation for y.

Answers

Answer: y=2−4x

Step-by-step explanation:

When solving for y in this problem(4x+y=2) we need to get y by itself in the equation. To do this we need to move 4x over to the right side of the equation. To do this we subtract, 4x from both sides of the equation.

Of 150 goldfish in the fish pound, 27 are red. What percentage of goldfish are red?

Answers

To get the percent, divide 27 by 150 then multiply the quotient by 100.

(27 / 150) * 100 = 18%

Solve for g.

C=1/2gq

Answers

Answer:

[tex] g = \frac{2c}{q}[/tex]

Step-by-step explanation:

[tex]c = \frac{1}{2} gq \\ 2c = gq \\ \huge \red{ \boxed{ g = \frac{2c}{q} }}[/tex]

Answer:

g = 2C/q

Step-by-step explanation:

C * (2) = 1/2gq * (2)  

2C / q= gq / q

2C/q = g

Name 4 noncoplanar points.

Answers

Answer:

RPVN

Step-by-step explanation:BRBR

V=1/3(pie)r(squared)h Need to isolate h.

Answers

Answer:

[tex]\frac{v}{\frac{1}{3}\pi^{2}}=h[/tex]

Step-by-step explanation:

Divide V by everything you don't need on the right side.

So, You should end up with

[tex]\frac{v}{\frac{1}{3}\pi^{2}}=h\\[/tex]

please help me and also show work plz​

Answers

Answer:

[tex]\boxed{k = -6}[/tex]

Step-by-step explanation:

[tex]13 +\frac{k}{3} =11[/tex]

→ Multiply everything by 3

[tex]39 + k = 33[/tex]

→ Minus 39 from both sides to isolate k

[tex]k = -6[/tex]

A perfect square ends with the same two digits. How many possible values of this digit are there?

Answers

Answer:

A perfect square is a whole number that is the square of another whole number.

n*n = N

where n and N are whole numbers.

Now, "a perfect square ends with the same two digits".

This can be really trivial.

For example, if we take the number 10, and we square it, we will have:

10*10 = 100

The last two digits of 100 are zeros, so it ends with the same two digits.

Now, if now we take:

100*100 = 10,000

10,000 is also a perfect square, and the two last digits are zeros again.

So we can see a pattern here, we can go forever with this:

1,000^2 = 1,000,000

10,000^2 = 100,000,000

etc...

So we can find infinite perfect squares that end with the same two digits.

Subtract. (4z+9)–(2z+2)

Answers

Answer:

(2z+7)

Step-by-step explanation:

Distribute -1 to (2z + 2)

4z + 9 -2z -2

Combine like terms:

2z + 7

Here is the question 20 points and brainlest but I want a detailed answer​

Answers

Answer:

18.75 sq.feet

Step-by-step explanation:

According to the question

1 card = 18 sq.in

150 cards = 150 * 18

                =  2700 sq.in

                = 18.75 sq.feet

What is the property of (4y + 1) x 0 =0

Answers

Answer: Zero Property

Step-by-step explanation:

7/8 divided by 6 help me NOW please

Answers

I think is 0.14583 but I’m not sure

Answer:

0.14583333333

Step-by-step explanation:

0.14583333333

An executive committee consists of 15 members: 7 men & 8 women. 5 members are selected at random to attend a meeting in Hawaii. The names are drawn from a hat. What’s the probability that all 5 selected are women?

Answers

Answer:

1.8%

Step-by-step explanation:

(8c5 * 7c0)/15c5

= 0.018

This is the answer which I get when I solve this... cross check the calculations once.

A small pebble has a mass of
about
20 L
b.
20 ml
20 g
20 kg
d.

Answers

Answer:

20g

since mass should be in kg or gram if small then g

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