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AleksAgata [21]
3 years ago
11

Help me please and thank you

Mathematics
1 answer:
sergiy2304 [10]3 years ago
8 0

Answer:

Equation:  \frac{7}{3}t + \frac{5}{2}t = 87

Hours: 18

Step by Step:

(7/3)t + (5/2)t = 87

(14/6)t + (15/6)t = 87

(29/6)t = 87

29t=522

t=28

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Help me please I think the rate of change is 35 but don’t know how to graph I’m tenth grade
rusak2 [61]

Let x be the time in hours and y be the distance driven in miles. If x = 0, then no time has passed which means he can't drive anywhere. So y = 0 when x = 0. The first point is (0,0). Note: the y intercept is 0 as this is where the graph crosses the vertical y axis.

One hour later, he has driven 35 miles because 140/4 = 35. In other words, his speed is 35 miles per hour (mph). So we have the second point (x,y) = (1,35). Note: the rate of change is the same as the slope in this problem. Also the rate of change is the same as saying "speed" for this problem.

Plot the two points (0,0) and (1,35) and draw a straight line through the two points. Extend the line as far as you can. The graph is linear assuming he maintains his speed to be the the same throughout the whole trip.

4 0
3 years ago
Chang knows one
larisa86 [58]

9514 1404 393

Answer:

  (d)  8 cm and 9 cm

Step-by-step explanation:

The sum of the other two side lengths must <em>exceed</em> 13 cm for a triangle to be possible.

  8 cm and 9 cm

5 0
2 years ago
Read 2 more answers
e. 2y(y + 3)this is not a quiz it is an assignment that is due tomorrow and I Wil be grateful for anyhelp
Elena-2011 [213]

We need to multiply

-2y(y+3)

We need to use the distributive property to expand this:

a(b+c)=ab+ac

Let's multiply it out using this property, to get our answer:

\begin{gathered} -2y(y+3) \\ =-2y(y)+(-2y)(3) \\ =-2y^2-6y \end{gathered}

6 0
1 year ago
Vectorcardiography Suppose the voltage vector of a healthy heart is given by [0.3, 20.2]. Cardiac abnormalities result in change
Alexeev081 [22]

Answer:

Please see attachment

Step-by-step explanation:

Please see attachment

7 0
3 years ago
6000 increased by 145%
Lisa [10]
Your question would be clearer if written as "What is 145% of 6000?"

1.45(6000) = 8700
8 0
3 years ago
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