3 years ago

F AB:BC is 3:11, solve for x

Mathematics

1 answer:

VMariaS [17]3 years ago

3 0

You ca ask a teacher

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Find the value of this expression if x=-7. x^2 -1 /x+4

belka [17]

Answer:

-16

Step-by-step explanation:

x^2 -1 /x+4

By putting the value of x in the expression as x = -7

= (-7)^2 - 1/ -7 +4

= (+49) - 1/ -3

= 48/-3

= -16

6 0

3 years ago

The domain of the function f(x) = √2-x is the set of numbers x satisfying:

jekas [21]

Try this solution:

D(f): √(2-x)≥0; ⇔ 2-x≥0; ⇔ x≤2 or x∈(-∞; 2].

7 0

3 years ago

Maria drove to a business appointment at 50mph in the morning. Her average speed on the return trip in the afternoon was 40 mph.

MakcuM [25]

Answer:

Distance to appointment point = 5 miles

Step-by-step explanation:

Let s be the distance to the appointment point,

We have Maria drove to a business appointment at 50mph in the morning.

Time taken in the morning

$t_m=\frac{s}{50}=0.02s$

Her average speed on the return trip in the afternoon was 40 mph.

Time taken in the afternoon

$t_a=\frac{s}{40}=0.025s$

Given that the return trip took 1/4hr longer because of traffic.

That is

$t_a-t_m=\frac{1}{4}hr=0.025hr$

Substituting

$t_a-t_m=0.025hr\\\\0.025s-0.02s=0.025\\\\s=5miles$

Distance to appointment point = 5 miles

7 0

3 years ago

Question that have not been answered

marin [14]

Answer: what do you mean

Step-by-step explanation:

4 0

3 years ago

6 of 8<br> Decrease £19064.67 by 19.5%<br> Give your answer rounded to 2 DP<br> G<br> £

meriva

Answer:

£15347.07

Step-by-step explanation:

Given data

Amount=£19064.67

% decrease=19.5%

let us find the value of 19.5%

=19.5/100*19064.67

=0.195*19064.67

=£3717.6

Hence the new Amount after the decrease is

=19064.67-3717.6

=£15347.07

7 0

3 years ago