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2 years ago

Complementary angles have a sum of 90 degrees true or false

Mathematics

1 answer:

swat322 years ago

8 0

True would be the answer, sorry if it’s wrong

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7 liters of gasoline between their 4 cars. How many liters of gasoline should each car get?

NISA [10]

Answer:

1.75 liters for each car.

Step-by-step explanation:

Divide:

*7 / 4 = 1.75.

Check:

*1.75 x 4 = 7.

4 0

2 years ago

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The temperature inside a certain industrial machine at time t seconds after startup, for 0 < t < 10, is given by h(t) = 42

frutty [35]

Answer:

$t= \frac{125}{38} s$

Step-by-step explanation:

We are given the temperature inside the machine from startup until 10 seconds later, the formula is:

$h(t)= 42 \cdot t +1 - 4\cdot t +2 (degrees \, C)$

We want to know at what time t the temperature inside the machine will be equal to 128 °C.

So we set:

$h(t)=128$

$42\cdot t+1-4\cdot t+2=128$

Now, we rearrange the equation to keep terms with t on the left hand side and terms without t on the right hand side

$42\cdot t-4\cdot t=128-1-2$

and we simplify:

$(42-4)\cdot t= 128-2-1= 125$

$38 \cdot t = 125$

now it's easy to solve for t:

$t=\frac{125}{38}$

And thus we arrive to the solution.

5 0

2 years ago

Does anybody know how to do this? Problem 13

inessss [21]

Subtract 6 from the x value in the first one, and remember that slope intercept form is mx+b

4 0

3 years ago

Please help me i need help

Airida [17]

Answer:

Step-by-step explanation:

3 0

2 years ago

20 POINTS and it has to be correct. This depends on if I pass or fail

valentina_108 [34]

Answer:

$(x+8)^{2}+(y-14)^{2}=19$

Step-by-step explanation:

The equation of a circle is: $(x-x_1)^{2}+(y-y_1)^{2}=r^2$ , where x_1 is the x coordinate of the center, y_1 is the y coordinate of the center, and r is the radius.

In this case, x_1 = -8, y_1 = 14, and r = 4.3589. Plugging these into the equation, we get:

$(x+8)^{2}+(y-14)^{2}=4.3589^2$

If you want, you can round 4.3589^2 to 19.

Then, the answer would be: $(x+8)^{2}+(y-14)^{2}=19$ .

Hope this helps!

7 0

3 years ago

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Complementary angles have a sum of 90 degrees true or false​

Complementary angles have a sum of 90 degrees true or false