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3 years ago

Number 11. I don't know what too do can you please help

Mathematics

2 answers:

inysia [295]3 years ago

6 0

The answer is three times. If triangles are simmilar then AC is simmiler to DF so since DF is 9 and AC is three. 9/3 is three so there is a three difirance between all sides.

Eva8 [605]3 years ago

5 0

U divide ABC by cm then multiples them together

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Which graph represent the equation y=-2

pychu [463]

Answer:

The top left graph.

Step-by-step explanation:

That is because it goes through y=-2

7 0

4 years ago

You need a 15% acid solution for a certain test, but your supplier only ships 5% solution and 17.5% solution. If you need 20 lit

Nimfa-mama [501]

Answer:

4 liters of 5% and 16 liters of 17.5%

Step-by-step explanation:

Let quantity of 5% be x liters and of 17.5% be y liters

x+y=20 hence y=20-x

Introducing percentages

0.05x+0.175(20-x)=0.15*20

0.05x+3.5-0.175x=3

-0.125x=-0.5

$x=\frac {-0.5}{-0.125}=4$

Therefore, y=20-x=20-4=16

You need 4 liters of 5% and 16 liters of 17.5% to achieve 20 liters of 15% acid solution

6 0

3 years ago

Read 2 more answers

Is there any app which helps solve pure maths questions?

allochka39001 [22]

Answer:

math a app good luck with the question

4 0

2 years ago

How to find the endpoint when given the midpoint and one of the end points

timama [110]

You have to go through your x-axis and up or down you y-axis and then determine if the end point are on the right plot form

4 0

3 years ago

Slope intercept! Please help! Will mark brainliest.

avanturin [10]

3) y = $-\frac{1}{2}$ x + 3

Slope-intercept form is y = mx + b when m is the slope and b is the y-intercept

b = 2 (line hits y-axis at 2)

m = $\frac{rise}{run} or\frac{change.in.y}{change.in.x}$ so $\frac{1}{2}$ and the line is negative, so $-\frac{1}{2}$

Write our equation by putting the parts together, and we get:

y = $-\frac{1}{2}$ x + 3

4) y = $-\frac{2}{3}$ x - 1.67

Point slope form is y - y1 = m (x - x1) when y1 is the y coordinate of the point, m is the slope, and x1 is the x coordinate of the point

y - y1 = m (x - x1)

Finding the slope (same as above) results in $-\frac{2}{3}$

<em>*aaaa I have to go, good luck, I do have the answer just no times to write out the steps, good luck and have a nice day!*</em>

3 0

3 years ago