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Serggg [28]
3 years ago
14

I need help I will give brainliest

Mathematics
1 answer:
Sav [38]3 years ago
6 0

Answer:

#5a: After 3 weeks, they will have a total score of 415 points.

#5b: (Full work below) Kris' score: 520 ; Justin's score: 450

Step-by-step explanation:

Kris: y=370+15x\\Justin: y=400+5x

-------------------------------------------------------------------------------------------------------

#5b FULL WORK BELOW

-------------------------------------------------------------------------------------------------------

x=number of weeks: 10

y= total score

Use your equations.

y=370+15x\\y=370+15(10)\\y=370+150\\y=520

Kris will have 520 points.

y=400+5x\\y=400+5(10)\\y=400+50\\y=450

Justin will have 450 points.

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Minimize Q=3x2+3y2​, where x+y=6.
weeeeeb [17]

Answer:

+(x + y) {}^{2}  = 6 {}^{2} \\ x {}^{2} + 2xy + y {?}^{2}  = 36

x {}^{2}  + y {}^{2}  = 36 - 2xy

q = 3(x {}^{2}  + y {}^{2} )

q = 3(36 - 2xy) = 108 - 6xy

5 0
3 years ago
Stephen uses \dfrac{2}{25}
zepelin [54]

Answer:

13\dfrac{3}{4}$ servings

Step-by-step explanation:

Stephen uses \dfrac{2}{25} kilograms of tofu in each serving of his dish.

He has 1\dfrac{1}{10} kilograms of tofu.

We want to determine how many servings Stephen can make.

To do this, we divide the total weight of tofu by the weight per serving.

\dfrac{\text{Total Weight(in kg)}}{\text{Weight(kg) per serving}} =\dfrac{1\dfrac{1}{10}}{ \dfrac{2}{25}}\\ = \dfrac{11}{10}\div  \dfrac{2}{25}\\\\= \dfrac{11}{10}X  \dfrac{25}{2}\\\\= \dfrac{11X25}{10X2}\\\\= \dfrac{275}{20}\\\\=13\dfrac{3}{4}$ servings

Stephen can make 13\dfrac{3}{4}$ servings .

6 0
3 years ago
John is driving on a highway.He uses one gallon of gas every 25 miles he drives.The distanc, D (in miles), he travels on g gallo
Cloud [144]

Answer:

I need help on this thing too someone help

Step-by-step explanation:

6 0
3 years ago
Vic sells ice creams. The table shows the midday temperature and her sales for five days. Work out vic’s total profit for the fi
lozanna [386]

Answer:

874.6

Step-by-step explanation:

total sales = 1045

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1045 - 125.4 - 45 = 874.6

4 0
3 years ago
How long does it take to drive 272 miles going 68mph
DedPeter [7]
<span>272mi/68mi/hr= 4 hr

Example:
Calculate the acceleration of a boat that has been cruising at 15 m/s but speeds up to 45 m/s in about 6 seconds. Don’t forget your units, m/s2. In order to calculate the acceleration of the boat we first have to identify the suited formula for acceleration in this scenario. </span>

<span>Hence, a = vf – vi / t. Vi = 15 m/s Vf = 45 m/s T = 6 seconds   </span>

<span>Solution: </span>
<span>A = 45 m/s – 15m/s / 6s </span>
A = 5m/s^2<span>
</span>

7 0
3 years ago
Read 2 more answers
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