Answer:
d) 87
Step-by-step explanation:
to solve this lets set up the equation

then we multiply 4 on both sides
253+x=340
and subtract 253 on both sides
x=87
to double check take the averages
(87+85+70+98)/4=85
Answer:
99
Step-by-step explanation:
You can solve it by Squaring/multiply 18 by itself and 15 by itself then subtract them both:
(18 × 18) - (15 × 15)
324 - 225
99
You could also do difference of two squares:
(x² - y²)
= (x + y) (x - y)
= (18 + 15) (18 - 15)
= (33) (3)
= 99
Answer:
Any number other than 2
Step-by-step explanation:
Well if we plug in any number other than 2 like 1 for the blank and distribute,
the right side becomes,
3x + 6 = 3x + a number other than 6
Parallel lines have the same slope but different y intercept.
Look at the image below ↓
<em>Thus,</em>
<em>to make the equation have no solution the blank has to be any number other than 2.</em>
<em />
<em>Hope this helps :)</em>
Answer:
1:45 (one hour and 45 minutes)
Step-by-step explanation:
12:45 - 1:45 = 1 hr.
1:45 - 2:30 = 45 min.
Answer:
Infant mortality will reduce to 33% in 1.63 years
Step-by-step explanation:
Let the population be X
Population after 1 year
% of 

As we know

Substituting the given values we get -

Taking log on both sides we get -
