1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nikitich [7]
3 years ago
14

Can you help answer these:

Mathematics
2 answers:
Papessa [141]3 years ago
8 0

Step-by-step explanation:

  1. (-3)*(1+3) = -9
  2. (-3)*(-3) = 9
  3. (+20)(+5) =100
  4. (+21)(-3) = -63
  5. (-2)*(+3)*(-4) = 24
mojhsa [17]3 years ago
6 0

Answer:

1) -3 x 3=-9

2) -3x-3=9

3)20x5=100

4) 21x-3=-63

5) -2x3x-4=24

note: negative x positive= negative

negative x negative=positive

positive x positive= positive

Step-by-step explanation:

hope this is helpful

You might be interested in
The volume of a cone is 3πx3 cubic units and its height is x units. Which expression represents the radius of the cone’s base, i
dalvyx [7]

Answer:

<em>r=3x</em>

Step-by-step explanation:

<u>The Volume of a Cone</u>

The volume of a cone of radius r and height h is:

\displaystyle V=\frac{1}{3}\pi hr^2

We are given the volume of a cone is

V=3\pi x^3

Equating:

\displaystyle \frac{1}{3}\pi hr^2=3\pi x^3

Multiplying by 3:

\pi hr^2=9\pi x^3

Simplifying by pi:

hr^2=9 x^3

Since h=x:

xr^2=9 x^3

Dividing by x:

r^2=9 x^2

Taking square roots:

r=\sqrt{9 x^2}=3x

Thus: r=3x

5 0
3 years ago
Read 2 more answers
Who good at angles ?
Kamila [148]

Answer:

JRQ = 56

Step-by-step explanation:

SRQ - SRJ = JRQ

166 - 110 = 56

6 0
3 years ago
The length of the rectangle is six times its width if the perimeter is 70cm find its area
Vesna [10]

Answer:

Step-by-step explanation:

Perimeter is 70 m

so w + w + 6w + 6w = 70

w = 70/14 = 5, l = 30m.

Area = l * w = 30 * 5 = 150 sq m

7 0
3 years ago
What property was applied to solve the equation below? Negative StartFraction 3 over 8 EndFraction x = 48 Negative StartFraction
Soloha48 [4]

Multiplication property of equality

Step-by-step explanation:

We are given that the equation

-\frac{3}{8}x=48

We have to find the property which was applied to solve the equation.

-\frac{3}{8}x=48

Reason: Given

Multiply by -8/3 on both sides

-\frac{8}{3}\times -\frac{3}{8}x=-\frac{8}{3}\times 48

By using multiplication property of equality.

x=\frac{-384}{3}

After simplification

x=-128

4 0
3 years ago
Read 2 more answers
What is the equation in slope intercept form of the line that contains the point (8, -2) and has a y-intercept of -4?
Alecsey [184]
Y=mx+b,slop intercept form
we need to find the slope.we nned to point
(-8,2) is given you can get the other by understanding the defintion of y-intercept (0,-4)
m = slope =  \frac{ 2  - ( -  4)}{ - 8 - 0}  =  \frac{6}{ - 8}
m=-6/8,b=y-intercept=-4
y =  \frac{ - 6}{8} x  + ( - 4)


4 0
3 years ago
Other questions:
  • A rental agent is renting a space for $7.50 a square foot. If you require a space 36 ft. by 16 ft., what will be the rental on t
    8·2 answers
  • The equation of a circle is x2 + (y - 10)2 = 16.
    9·1 answer
  • What the prime factorization on 75?<br><br>​
    5·1 answer
  • What is the quotient? x+5 divided by 3x2+4x+5
    5·2 answers
  • there are 60 tables in a restaurant, with 25% of them seating 2 people. The tables remaining seat 4 people. How many seats are t
    11·1 answer
  • Help me on this math question please
    6·2 answers
  • During a scuba dive, Lainey descended to a point 19 feet below the ocean surface. She continued her descent at a rate of 25 feet
    6·1 answer
  • Tamara purchased 31 cases of tile to use on her bathroom floors. She use it she used 17 in her upstairs bathroom and the rest do
    6·2 answers
  • Solve x for triangle
    12·1 answer
  • Solve using elimination.<br> -4x + 7y = -1<br> 6x - 7y = 5
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!