Which unit rates would be appropriate for describing the speed of cars in a race?

1 answer:

7 0

I would think miles per hour would be the best units to use because that is what the speedometer of a car is read in. Hope this helped! comment back with any questions you still have!

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at haydens school there is 1 teacher for every 15 students.There are 630 students at the school. What proporation can be used to

Bess [88]

Answer:

42 teachers

Step-by-step explanation:

$\frac{a}{b}=\frac{c}{d}$

$\frac{1}{15} =\frac{x}{630} \\15x=630\\x=\frac{630}{15} \\x=42$

6 0

3 years ago

Hat function is represented by a line with slope −2 that passes through the point (0, 4)?

Gre4nikov [31]

Answer:

Step-by-step explanation:

You can use the formula y=mx+b

f(x) is the same as y

m=slope

b=y intercept

We know that the slope is -2 so which answer has -2 as b? (Which one has a -2 before the x?)

Y Intercept is where the line crosses though the y axis. The point of the y intercept will ALWAYS have 0 as x. So (0,4) is the y intercept. You could also say 4 is the y intercept. Which one has 4 as b? (Which one says +4 after -2x)

The only answer that matches is C.

I hope thay made sense.

5 0

3 years ago

Work out the area of this cuboid 7.5cm 2.3 cm and 5cm

gizmo_the_mogwai [7]

Answer:

Below

Step-by-step explanation:

Area if cuboid =2(l*b+b*h+h*l)

= 2(7.5*5+5*2.3+2.3*7.5)

=2(37.5+11.5+17.25)