NEED HELP ASAP WILL GIVE BRAINLY IF CORRECT PLEASE HELP 20 POINTS out

Mathematics

2 answers:

EastWind [94]3 years ago

8 0

Answer:

It would be -27

Step-by-step explanation:

Math

Scilla [17]3 years ago

7 0

-15x -8y=-27 Thas the answer

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PLS HELP ASAP

sleet_krkn [62]

As the scale drawing and the actual car are similar .

so,

height of bumper in drawing

height of bumper in actual car=height of the window in drawing/height of the window in actual car

6 in./16*12 in.=¾ in./height of the window in actual car

height of the window in actual car=¾*16*12/6 in.

=24 inch(Answer )

8 0

3 years ago

ABC Game store sells new games, n, for $19 and used games, u, for $9. The store earned $7500 in revenue last month. The store so

Step2247 [10]

Answer:

19n+9u=7500 and 4u-n

Step-by-step explanation:

7 0

2 years ago

Maura is 5 years younger than her sister Cara. Seven years ago, Maura was half as old as her sister. How old is Maura now?

masha68 [24]

Let's call Maura's age now M and Cara's age now C.

We know Maura is five years younger than Cara. In symbols that is, M - 5 = C

We also know that 7 years ago Maura's age was half of Cara's. Maura's age 7 years ago was M-7 and Cara's age seven years ago was C-7. Since Maura's age (7 years ago) was half of Cara's we can write in symbols: $M-7= \frac{1}{2}(C-7)$

Let's take that last equation and substitute C - 5 for M (this is because according to our first equation these are equal). When we do this we get an equation with only C as the variable and solve for C as follows:

$M-7= \frac{1}{2}(C-7)$
$C-5-7= \frac{1}{2}(C-7)$
$C-12= \frac{1}{2}C-( \frac{1}{2})(7)$
$C-12= .5C-3.5$
$.5C-12= -3.5$
$.5C= 8.5$
$C= 17$

Cara is 17. Since Maura is 5 years younger she is 12.

As a check, seven years ago Cara was 10 and Maura was 5. It is the case that Maura was half Cara's age seven years ago.

4 0

3 years ago

Find the lateral area of the regular prism with height h, if the base of the prism is: Equilateral triangle with the side 4 cm a

Shtirlitz [24]

Equilateral triangle with the side 4 cm and h=2.5 cm

In equilateral triangle all sides are equal

so all sides are equal in the base of the prism

lateral area of the prism = Perimeter of the base * height

Perimeter of the base equilateral triangle = side + side + side

lateral area of the prism =(side + side + side) * height

= (4+4+4) * 2.5

= $30 cm^2$