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guajiro [1.7K]
3 years ago
8

PLS HELP I GIVE BRAINLIEST

Mathematics
1 answer:
Mekhanik [1.2K]3 years ago
3 0

Answer:

Step-by-step explanation:

relative speed is calculated by the difference of the one with respect to the other

let car be 70 mph

and lorry  be 50 mph../

relative speed of car with respect to lorry = 70-50 = 20 mph

this is ur answer

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PLEAASE HALLP EXPLAIN!! NEED HEEELP 14 POINTS
erastova [34]
AWNSER: B or 54

Hope this helps and Happy Friday!

6 0
2 years ago
Bryce tried to solve an equation step by step. \qquad\begin{aligned} \dfrac83&=3\left(c+\dfrac53\right)\\\\ \\ \dfrac83&
sesenic [268]

Answer:

Bryce is wrong in step 1 because he did not distribute 3 over 5/3

Explanation

Given the steps taken by bryce as shown, we are to find where he made an error

\qquad\begin{aligned} \dfrac83&=3\left(c+\dfrac53\right)\\\\ \\ \dfrac83&=3c+\dfrac53&\green{\text{Step } 1}\\\\ \\ 1&=3c&\blue{\text{Step } 2}\\\\ \\ \dfrac13&=c&\purple{\text{Step } 3}\\\\ \end{aligned}

Given the expression;

\dfrac83&=3\left(c+\dfrac53\right)\\\\ \\

Step 1:Expand the bracket using the distributive law;

8/3 = 3c + 3(5/3)

<em>Simplify</em>

8/3 = 3c + 15/3

Step 2: Subtract 15/3 from both sides

8/3 - 15/3 = 3c+15/3-15/3

(8-15)/3 = 3c

-7/3 = 3c

Step 3: Multiply both sides by 1/3

-7/3 * 1/3 = 3c * 1/3

-7/9 = c

Swap

c = -7/9

From the calculation, we can see that Bryce is wrong in step 1 because he did not distribute 3 over 5/3 thereby making his solution incorrect

3 0
2 years ago
Bought a board game for $30. The board game is now worth $55. Calculate the percent change in the game's value.
Hatshy [7]
30 is the old value and 55 is the new value. In this case we have a positive change (increase) of 83.33333333 percent because the new value is greater than the old value. Using this tool you can find the percent increase for any value.
3 0
3 years ago
0.10x + 185 = 0.08x + 250
geniusboy [140]
0.10x - 0.08x = 250 - 185
0.02x = 65
x = 3250
6 0
3 years ago
In a cylindrical wooden block with a radius of 7 cm and a height of 14 cm, hemispherical blocks with
Sunny_sXe [5.5K]

9514 1404 393

Answer:

  1372π/3 cm^3 ≈ 1436.8 cm^3

Step-by-step explanation:

The diameter and height of the cylinder are both 14 cm. The resulting solid will be a 14 cm sphere. Its volume is ...

  V = 4/3πr^3 = 4/3π(7 cm)^3 = 1372π/3 cm^3 ≈ 1436.8 cm^3

4 0
2 years ago
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