3 years ago

Simplify each expression by combining like terms: 9m-7m+13 Please explain if you can

Mathematics

1 answer:

Bas_tet [7]3 years ago

8 0

Subtract 9 and 7 (9-7) which gives you 2m
the answer is 2m+13

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Find the surface area of the prism.

Tju [1.3M]

Answer:

920 ft^2

Step-by-step explanation:

area of triangles: base x height / 2 (2)

8 x 15 / 2

= 60 x 2

= 120

area of rectangular base: length x width

15 x 20 = 300

area of sloped rectangle: length x width

17 x 20 = 340

area of rectangle: length x width

8 x 20 = 160

Total: 120 + 300 + 340 + 160

=920 ft^2

3 0

4 years ago

Read 2 more answers

Solve for x<br> 3.24x + 8.37x -8.09=7.83<br> X= <br> Round your answer to the nearest hundredth

amm1812

$3.24x + 8.37x -8.09=7.83$

adding 3.24 x and 8.37x on the right side:

$3.24x + 8.37x -8.09=7.83$

$11.61x -8.09=7.83$

adding 8.09 to both sides:

$11.61x =7.83+8.09$

$11.61x =15.92$

dividing both sides by 11.61

Answer : x=1.37

4 0

3 years ago

The ratio of basketball players to baseball players at Cypress High School is 4 to 3. If Coach Nelson has 20 basketball players,

notsponge [240]

Answer:

i think it is 15

4 0

3 years ago

Can somebody help me with this question

algol [13]

Sorry I'm not sure about this one

5 0

4 years ago

4x – 3y=8<br> 2. 5x – 2y = -11

AlladinOne [14]

Answer:

$x = -7$

$y = - 12$

Step-by-step explanation:

The given system is:

4x-3y=8

5x-2y=-11

We make x the subject in the top equation to get:

$x = \frac{3}{4}y + 2$

Plug this expression for x in the bottom equation to get

$5( \frac{3}{4}y + 2) - 2y= - 11$

We expand to obtain

$\frac{15}{4} y + 10 - 2y = - 11$

Multiply through by 4

$15y + 40 - 8y = - 44$

Group similar terms

$15y - 8y = - 44 - 40$

$7y = - 84$

$y = - \frac{84}{7} =-12$

This means

$x = -12\times \frac{3}{4} + 2$

$x = - 7$

6 0

4 years ago