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nataly862011 [7]
3 years ago
7

I'm done with this test, just exhausted from it. Brainly do your magic.

Mathematics
1 answer:
olya-2409 [2.1K]3 years ago
4 0

Answer:

4.5

Step-by-step explanation:

when the height is 0 the ball will hit the ground

so the equation is

-12t²+54t=0

12t²-54t=0

2t²-9t=0

t(2t-9)=0

t=0

t=4.5

so the answer is

4.5

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Solve the following sums:<br> a) 4(a+1)=2 b) 3-9x=-6-8x c) 3(4x-1)=7(2x-5)
aliya0001 [1]

Step-by-step explanation:

A. 4(a + 1) = 2

= 4a + 4 = 2

= 4a = 2-4 = - 2

= a = - 2/ 4 = - 1/2

B. 3 - 9x = - 6-8x

3 + 6 = - 8x +9x

9 = x

C. 12x - 3 = 14x - 35

- 3 + 35 = 14x - 12x

32 = 2x

32 / 2 = x

16 = x

7 0
3 years ago
What do you get when you subtract 9 from b??​
Citrus2011 [14]
You cannot subtract a number from a unknown. You’d simply put (9-b) in its place.
3 0
3 years ago
Read 2 more answers
A graduating high school student decides to take a year off and work to save money for college. The student plans to invest all
Anika [276]

Answer:

amount = 407 per month

Step-by-step explanation:

given data

future value = $5000

interest rate = 6% = \frac{0.06}{4} = 0.015

time = 12 months = 4 compound per year

solution

we use here formula that is

amount = future value × \frac{r}{(1+r)^t-1}   .......................1

put here value and we get

amount = 5000 × \frac{0.015}{(1+0.015)^{4}-1}  

amount = 1222 per quarter

or amount = 407 per month

8 0
4 years ago
A function of the form f(x) = mx + b, where m and b are real numbers, is called a _____
jasenka [17]

Answer:

A function of the form f(x) = mx + b, where 'm' and 'b' are real numbers, is called a <u>linear function.</u>

Step-by-step explanation:

A linear function is one in which the f(x) value of the function varies linearly with 'x'. When we plot a linear function on a graph, the resulting curve is always a straight line with the slope of the line being constant.

A linear function is of the form:

f(x)=mx+b, where, 'm' and 'b' are real numbers.

The degree or the highest exponent of 'x' in a linear function is always equal to 1.

Therefore, a function of the form f(x) = mx + b, where 'm' and 'b' are real numbers, is called a <u>linear function.</u>

4 0
3 years ago
olivia necesita dividir un carrete de liston que mide 75 metros en 4 partes iguales cuanto debe medir cada liston
kykrilka [37]
<span>La respuesta es 18.75</span>
8 0
4 years ago
Read 2 more answers
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