Answer:
9/10
Step-by-step explanation:
one blue and 9 green = 10 marbles
P(green) = number of green / total
=9/10
Answer:
x = 30
Step-by-step explanation:
The figures are similar, thus the ratios of corresponding sides are equal, that is
= ( cross- multiply )
27x = 810 ( divide both sides by 27 )
x = 30
Answer:
true
Step-by-step explanation:
true because it is right
Sean reads 60 minutes on wednesday
<em><u>Solution:</u></em>
Given that,
Let "x" be the number of minutes read on monday
Let "y" be the number of minutes read on tuesday
Let "z" be the number of minutes read on wednesday
<em><u>He reads 3 times as many minutes on Tuesday as he does on Monday</u></em>
Number of minutes read on tuesday = 3 times the number of minutes read on monday
y = 3x --------- eqn 1
<em><u>He reads 4 times as many minutes on Wednesday as he does on Monday</u></em>
Number of minutes read on wednesday = 4 times the number of minutes read on monday
z = 4x ------- eqn 2
<em><u>Sean reads 45 minutes on Tuesday</u></em>
y = 45
<em><u>Substitute y = 45 in eqn 1</u></em>
45 = 3x
x = 15
<em><u>Substitute x = 15 in eqn 2</u></em>
z = 4(15)
z = 60
Thus he reads 60 minutes on wednesday
A is not correct, because some slopes can be negative. For example, the equation
has a slope of
.
B is also not correct. For instance,
and
have the same slope. But they are different lines.
C is not correct either. Not all steep lines have a negative slope. A line with a slope of 10 is very steep, but not negative.
D is correct. It is a rule that t<span>he slope of a line that moves up from left to right is positive.
E is also correct. If you have the equation </span>
, the slope will be undefined.<span>
</span>