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2 years ago

The water in a fish tank is treated by using 5 millilitres of AquaGuard for every 10 litres of

Mathematics

1 answer:

lorasvet [3.4K]2 years ago

4 0

I think 5:10 but I’m not sure I don’t have how many liters are in the tank

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1. Which of the following are NOT triangle congruence postulates? (There may be more than one answer.)

andreev551 [17]

Answer:

a)Angle Angle Angle

d)Angle Side Side

f)Side Side Angle

Step-by-step explanation:

The postulates that are used to prove the triangles congruent are:

1)Side Side Side

2)Side Angle Side

3)Angle side Angle

4)Angle Angle Side

5)Hypotenuse Leg

Other than these postulates none can be used to prove the triangles congruent.

The choices which are not triangle congruence postulate are:

a)Angle Angle Angle

d)Angle Side Side

f)Side Side Angle

3 0

3 years ago

1 The distance on the number line from a to 7 is 0.5. Which of the following could be the value of a ? A) 7.5 B) -3.5 C 0.5 D 6.

alukav5142 [94]

Answer:

6.5

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

1(4 – 22); 2 – 2x I don’t get this question can someone help me

sertanlavr [38]

Answer:

i dont know if this is what u wanted but it wasn't really specified

Step-by-step explanation:

1(4 – 22); 2 – 2x

simplified:

−18;−2x+2

8 0

3 years ago

Quick algebra 1 question for 10 points!

jonny [76]

Answer:

$\displaystyle{f(x) = -2(x-3)^2 + 2}$

Step-by-step explanation:

To find y-intercept of a graph, we have to substitute x = 0 to find it - consider each functions:

First Choice

$\displaystyle{f(x) = 2x(x+14)-64}\\\\\displaystyle{f(0) = 2\cdot 0(0+14)-64}\\\\\displaystyle{f(0) = 0\cdot 14-64}\\\\\displaystyle{f(0) = -64}$

Second Choice

$\displaystyle{f(x) = (x+4)^2+2x}\\\\\displaystyle{f(0) = (0+4)^2 + 2(0)}\\\\\displaystyle{f(0) = 4^2}\\\\\displaystyle{f(0) = 16}$

Third Choice

$\displaystyle{f(x) = (x-16)^2 + 4}\\\\\displaystyle{f(0) = (0-16)^2 + 4}\\\\\displaystyle{f(0) = (-16)^2 + 4}\\\\\displaystyle{f(0) = 256 + 4}\\\\\displaystyle{f(0) = 260}$

Fourth Choice

$\displaystyle{f(x) = -2(x-3)^2 + 2}\\\\\displaystyle{f(0) = -2(0-3)^2 + 2}\\\\\displaystyle{f(0) = -2(-3)^2 + 2}\\\\\displaystyle{f(0) = -2\cdot 9 + 2}\\\\\displaystyle{f(0) = -18+2}\\\\\displaystyle{f(0) = -16}\\$

Therefore, fourth choice is correct.

6 0

2 years ago

1.) What is the equation of a vertical line passing through the point (2, -4)?

Bezzdna [24]

The points lying on a vertical line share the same $x$ coordinate. Similarly, the points lying on a horizontal line share the same $y$ coordinate.

So, vertical lines are identified by the $x$ coordinate of their points, and have an equation like $x=x_0$ , where $x_0$ is a fixed real number.

Similarly, horizontal lines are identified by the $y$ coordinate of their points, and have an equation like $y=y_0$ , where $y_0$ is a fixed real number.

We are ready to answer the questions:

A vertical line passing through the point (2, -4) has equation $x=2$
A horizontal line passing through the point (2, -4) has equation $y=-4$
The two lines are perpendicular

6 0

4 years ago