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Amiraneli [1.4K]
3 years ago
15

Determining the Difference in Means

Mathematics
2 answers:
Natali [406]3 years ago
7 0

Answer:

its 3mm i promise its right pls make me brainliest

Step-by-step explanation:

BartSMP [9]3 years ago
4 0

Answer:

15.27 +12.05

Step-by-step explanation:

15.27 +12.05

Сондай

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The ratio of cars to trucks is 8 cars to 36 trucks. If there are 9 trucks, how many cars are there?
solniwko [45]
Set up the proportion with the numbers on top equalling the cars and the numbers on the bottom representing the trucks.
\frac{8}{36} = \frac{c}{9}
c equals the number of unknown cars.
To solve the proportion, cross multiply (multiply 8 by 9 and 36 by c) and solve for c.
72 = 36c
Divide 36 from both sides to get the answer.
c = 2
If there are 9 trucks, there are 2 cars.
You can check this by dividing 2 by 9, and dividing 8 by 36. Since they both equal the same number, this answer is correct.

Hope this helps =)

8 0
3 years ago
Read 2 more answers
A line passes through the point (10,5) and has a slope of 3/2. Write and equation in slope intercept form
ehidna [41]
\bf \begin{array}{lllll}
&x_1&y_1\\
%   (a,b)
&({{ 10}}\quad ,&{{ 5}})\quad 
\end{array}
\\\\\\
% slope  = m
slope = {{ m}}= \cfrac{rise}{run} \implies \cfrac{3}{2}
\\\\\\
% point-slope intercept
\stackrel{\textit{point-slope form}}{y-{{ y_1}}={{ m}}(x-{{ x_1}})}\implies y-5=\cfrac{3}{2}(x-10)\implies y-5=\cfrac{3}{2}x-15
\\\\\\
y=\cfrac{3}{2}x-15+5\implies y=\cfrac{3}{2}x-10
8 0
3 years ago
3(0.3x +1.3) = 2(0.4x -0.85)
Verdich [7]

Answer:

Step-by-step explanation:

3(0.3x + 1.3) = 2(0.4x - 0.85)

0.9x + 3.9 = 0.8x - 1.70

0.9x - 0.8x = - 1.70 - 3.9

0.1x = - 5.6

x = - 5.6 / 0.1

x = - 56

5 0
3 years ago
A recipe makes 6 2/3 cups. The serving size is 5/6 cup. How many servings does the recipe make?
Dmitry [639]
Answer is a I just know
6 0
2 years ago
Which ordered pair is a solution of the system ?
drek231 [11]
Hello!

Since we already see an equation that equals y (-2x-4), we can plug that equation into the first to solve for x.

x+4(-2x-4)=19
x-8x-16=19
-7x=35
x=-5

Now that we know the value of x, we will plug it into the second equation to solve for y.

y=-2(-5)-4
y=10=4
y=6

This gives us the answer below

\left \{ {{x=-5} \atop {y=6}} \right.

The correct answer is A) (-5,6)

I hope this helps!
7 0
2 years ago
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