Mathematics High School

Is (-5) (-4) is negative or positive?
Answer:

Answers

Answer 1

Answer:

Step-by-step explanation:

the product will be positive,

remeber, (-)*(-)=+

product =20

Related Questions

What is the volume of a spherical water balloon with a radius of 6 inches?

Answers

Answer:

288πin³

Step-by-step explanation:

Volume of a sphere is expressed as;

V = 4/3πr³

r is the radius = 6 inches

Substitute into the formula

V = 4/3π(6)³

V = 4/3π(216)

V= 864/3π

V = 288π in³

Hence the volume of the sphere is 288πin³

HELP I’ll mark as Brainliest!!!

Answers

Answer:

C.

Step-by-step explanation:

......Srry if Wrong :(

help me please and thank you

Answers

To check which set does not make a right triangle, let us check if each set is a Pythagorean triplet:

A) 3, 4, 5
(3)^2+(4)^2=(5)^2
= 9+16=25
= 25=25

B) 5, 12, 13
(5)^2+(12)^2=(13)^2
= 25+144=169
= 169=169

C) 9, 40, 41
(9)^2+(40)^2=(41)^2
= 81+1600=1681
= 1681=1681

D) 7, 8, 15
(7)^2+(8)^2=(15)^2
= 49+64=225
= 113≠225

Thus, the set of side measures 7, 8, 15 does not form a Pythagorean Triplet, and thus not a right triangle.

Step-by-step explanation:

hlw bro or sis I don't know ur sis or bro but hloooo

9. Combine the radical expression, if possible.

Answers

Answer:

we conclude that:

[tex]3\sqrt{125}+4\sqrt{20}=23\sqrt{5}[/tex]    

Hence, the last option i.e. [tex]23\sqrt{5}[/tex] is correct.                      

Step-by-step explanation:

Given the expression

[tex]3\sqrt{125}+4\sqrt{20}[/tex]

Combining the radical expressions

[tex]3\sqrt{125}+4\sqrt{20}[/tex]

let us first solve

[tex]3\sqrt{125}[/tex]

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

[tex]=3\sqrt{5^2\cdot \:5}[/tex]

Apply radical rule:  [tex]\sqrt{ab}=\sqrt{a}\sqrt{b},\:\quad \:a\ge 0,\:b\ge 0[/tex]

[tex]=3\sqrt{5^2}\sqrt{5}[/tex]

Apply radical rule:   [tex]\sqrt{a^2}=a,\:\quad \:a\ge 0[/tex]

[tex]=3\cdot \:5\sqrt{5}[/tex]

[tex]=15\sqrt{5}[/tex]

Thus,

[tex]3\sqrt{125}=15\sqrt{5}[/tex]

similarly solving

[tex]4\sqrt{20}[/tex]

[tex]=4\sqrt{2^2\cdot \:5}[/tex]

Apply radical rule:  [tex]\sqrt{ab}=\sqrt{a}\sqrt{b},\:\quad \:a\ge 0,\:b\ge 0[/tex]

[tex]=4\sqrt{2^2}\sqrt{5}[/tex]

Apply radical rule:   [tex]\sqrt{a^2}=a,\:\quad \:a\ge 0[/tex]

[tex]=4\cdot \:2\sqrt{5}[/tex]

[tex]=8\sqrt{5}[/tex]

Thus,

[tex]4\sqrt{20}=8\sqrt{5}[/tex]

so we get

[tex]3\sqrt{125}=15\sqrt{5}[/tex]

[tex]4\sqrt{20}=8\sqrt{5}[/tex]

so the expression becomes

[tex]3\sqrt{125}+4\sqrt{20}=15\sqrt{5}+8\sqrt{5}[/tex]        ∵ [tex]3\sqrt{125}=15\sqrt{5}[/tex] , [tex]4\sqrt{20}=8\sqrt{5}[/tex]

                        [tex]=23\sqrt{5}[/tex]                   ∵ [tex]15\sqrt{5}+8\sqrt{5}=23\sqrt{5}[/tex]

Therefore, we conclude that:

[tex]3\sqrt{125}+4\sqrt{20}=23\sqrt{5}[/tex]    

Hence, the last option i.e. [tex]23\sqrt{5}[/tex] is correct.                    

On a map with a scale of 1 inch= 100 miles, the distance between two cities is 7.55 inches. If a car travels 55 miles per hour, about how long will it take to get from one city to another.

Answers

Answer:

13.73 hours

Step-by-step explanation:

On a map with a scale of

1 inch= 100 miles

the distance between two cities is 7.55 inches.

We convert from inches to miles

1 inch = 100 miles

7.55 inches = x

x = 7.55 × 100 miles

x = 755 miles

The distance between the two cities = 755 miles

If a car travels 55 miles per hour, about how long will it take to get from one city to another?

We are to calculate the Time

Speed = Distance /Time

Time = Distance/Speed

Hence, the time is calculated as:

755 miles/55 miles per hour

= 13.727272727 hours

≈ 13.73 hours

(please help!)Abigail invested $2,900 in an account paying an interest rate of 2.8% compounded
quarterly. Assuming no deposits or withdrawals are made, how long would it take, to
the nearest year, for the value of the account to reach $4,050?

Answers

Answer:

Step-by-step explanation:

4050 = 2900 (1 + 0.028/4)^4t

4050 = 2900 (1.007)^4t

Divide all by 2900

1.3965517 = 1.007^4t

TURN LOG

log (1.3965517) = log (1.007^4t)

47.8819724 = 4t

11.9704931 = t

Round to nearest year = 12

T = 12

Jay spent 3.90 for 6 candy bars. Find the unit rate

Answers

Answer:

0.65

Step-by-step explanation:

divide 3.90 by 6

(5, 7, 9, 11, 12, 14, 19) find the mean and median

Answers

Answer:

The mean is 7 nd the median is 8

Step-by-step explanation:

Solve for h .

-98 = -7 h
PLEASE HELP ME
I will make you brainliest.

Answers

Given,

[tex] - 98 = - 7h[/tex]

[tex] \implies \: - 7h \: = - 98[/tex]

[ Firstly, Arrange it ]

Now,

[tex] \implies \: h = \cancel\dfrac{ - 98}{ - 7} [/tex]

minus sign minus sign are also canceled.

[tex] \implies \: h \: = 14[/tex]

hence,the value of h is 14 .

Actually help pls people have been typing random stuff

Answers

Answer:

reading, chores, and then homework

Step-by-step explanation:

just accept it

Read, chores, hw (last option)

a mobile phone company reported a 160% increase in sales in one year. At the start of the year sales were 3 million. What was the sales increase over the year?

Answers

Answer:

4800000 increase in sales

Step-by-step explanation:

Susan's fish tank has 16 liters of water in it. She plans to add 4 liters per minute until the tank has at least 64 liters. What are the possible numbers of minutes Susan could add water?

Use t for the number of minutes.
Write your answer as an inequality solved for t.

Answers

Answer:

64

Step-by-step explanation:

cause I did it in classs


Shawn is taking aluminum cans to the recycling center. After placing his cans on the weight scale, he finds his cans weigh 6.619
pounds. If the recycling center pays $0.65 per pound of aluminum cans, how much money will Shawn earn to the nearest cent?
A. $7.27
B. $4.30
C. $10.18
D. $4.40


Answers

Answer:

B. $4.30 ;0

Step-by-step explanation:

Find the length of x.

Answers

130° use the formula that your teacher gives you, a calculator can help too

An electrician completes 1/6 of a job in 2/3 hour. At this rate, how many hours does it take the electrician to complete the job

Answers

Answer:

12/3 or 4 hours

Step-by-step explanation:

what is -5x - 10 > -85​

Answers

Answer:

x>15

Step-by-step explanation:

-5x-10>-85

-5x>-75

x>15

Justin drove 804 miles in 12 hours.
At the same rate, how many miles would he drive in 5 hours?

Answers

Answer:

335 Miles

Step-by-step explanation:

804/12 = 67 MPH

5 × 67 = 335

The length of the rectangle shown below is represented by the expression (x - 2)2. The width is represented by the expression (3x - 5). What is the area of the rectangle?

Answers

Answer:

(6x² - 22x + 20) square units

Step-by-step explanation:

The area of a rectangle is calculated as:

Length × Width

From the question

Length = (x - 2)2 = 2x - 4

Widths = 3x - 5

The area of the rectangle =

(2x - 4 ) × (3x - 5)

2x(3x - 5) -4(3x - 5)

6x² - 10x - 12x + 20

6x² - 22x + 20

The area of the rectangle =

(6x² - 22x + 20) square units

Can somebody plz help answer these questions correctly thanks!! (Only if u get this). C:

WILL MARK BRIANLIEST WHOEVER ANSWERS FIRST

Answers

6. N=6
7. N=30
8. N=7
9. N=4
6. 6:18
7. 12:30
8. 4/7
9. 4/6

can someone solve this for me.

Answers

4.
A: yes
B: no
C: yes
D: no
You’ll have to do the work for 5 sorry

Negative one-half(–4a – 6) + a2 for a = 8

Answers

Answer:

Leon multiplied 8 by 2 when he should have raised 8 to a power of 2.  

The multiplication of two negative values in step 4 should result in a positive value.

The correct answer should be 83.

Step-by-step explanation:

I did it i was correct

Answer:

Last three are correct

Step-by-step explanation:

What is the value of x in the equation x-7=11

Answers

It’s gonna be 18
X=18

please helppppp meeee

Answers

Ok I will but where’s the problem

Answer: It is the second answer (2)

Step-by-step explanation:

Complete the factored form of the linear expression 21x + 14y = ( ) ( + )​

Answers

Answer:

21x+14y

=7(3x+2y) taking common 7

HEEEEEEELLLLLPPP MMMMEEEEE

Answers

it’s A because it’s the only equation that gives the answer for how many feet in 10 seconds

Find the slope, or rate of change, from the following ordered pairs: (-2, 17) and (-1, 5).

Answers

Answer:

m=(y2-y1)/(x2-x1)

m=-12/1

m= -12

Answer:

y=-12x-7

Step-by-step explanation:

1. Identify the coordinates (-2,17) and (-1,5)

2. Input the values into the formula.

3. Subtract the values in parentheses

4. Simplify the fraction to get the slope

(25x - 15)°
What is the value of x

Answers

Answer: 5x-3

Step-by-step explanation:

(25x-15)

25/5x-15/5

5x-3

Answer:

5x-3?

Step-by-step explanation:

struggling help please)):

Answers

It’s y=7. It’s just a horizontal line look.

help please and thank you​

Answers

Answer:

Angle A =  50

Step-by-step explanation:

Answer: angle A= 50 step by step explanation:

1)

Which of these graphs represents a function?
A)
А
B)
B
)
C
D)
D

Answers

The answer is C because when you use the vertical test it only passes through one line
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