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2 years ago

15

Math write the number shown by the blocks

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siniylev [52]2 years ago

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Please show pictures

sertanlavr [38]2 years ago

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A leak in a water tank causes the water level to decrease by 3.6×10−2 millimeters each second. About how many millimeters does t

Paladinen [302]

For this case, the first thing you should do is multiply the rate of decrease by time.
We have then:
(3.6 × 10-2) * (1.8 × 104)
= 648 mm
We are going to convert this number into scientific notation:
= 6.48 * 10 ^ 2 mm
Rounding we have:
= 6.5 * 10 ^ 2 mm
Answer:
The water level in the tank decreases in 6.5 * 10 ^ 2 millimeters in 5 hours

4 0

3 years ago

A boat travels at a rate of 25 miles, m, per hour, h. which equation represents this scenario?

son4ous [18]

The correct answer is A

6 0

2 years ago

Read 2 more answers

I need help please help

Molodets [167]

Answer:

5.5 hours.

Step-by-step explanation:

Didn't I already answer this for you? I gave you the step by step and everything.

7 0

3 years ago

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A polygon has 10 sides. what is the sum of the measure of the exterior angles of the polygon?

Maslowich

Sum of all exterior angles = 360
360 divided by s
s = sides
360 divided by 10 = 36
C.360

7 0

2 years ago

A quadratic function has one root at 5 and has a vertex point at (7, 2).

skelet666 [1.2K]

<h3><u>Explanation</u></h3>

Vertex Form

$y = a {(x - h)}^{2} + k$

where a-term determines the shape of graph.

h-term determines the change of graph for x-axis.

k-term determines the change of graph for y-axis.

Vertex of the graph is at (h,k).

Substitute the vertex value in the equation.

$y = a {(x - 7)}^{2} + 2$

We need to find the value of a-term. We have the given root which we can substitute in the equation.

<em>Also</em><em> </em><em>the</em><em> </em><em>roots</em><em> </em><em>are</em><em> </em><em>on</em><em> </em><em>x-axis</em><em>,</em><em> </em><em>meaning</em><em> </em><em>that</em><em> </em><em>the</em><em> </em><em>y-value</em><em> </em><em>for</em><em> </em><em>roots</em><em> </em><em>must</em><em> </em><em>be</em><em> </em><em>0</em><em>.</em>

Substitute (5,0) in the equation.

$0 =a {(5 - 7)}^{2} + 2 \\ 0 =a {( - 2)} ^{2} + 2 \\ 0 = 4a + 2$

Solve for a-term.

$4a + 2 = 0 \\ 4a = - 2 \\ a = \frac{ - 2}{4} \\ a = - \frac{1}{2}$

Therefore the value of a is - 1/2. Rewrite the equation as we get the answer.

<h3><u>Answer</u></h3>

<u> $\large \boxed{y = - \frac{1}{2} {(x - 7)}^{2} + 2}$ </u>

5 0

2 years ago