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Mathematics

1 answer:

mihalych1998 [28]3 years ago

3 0

Answer: 30

Step-by-step explanation:

3+4+3=10 400/10=40 so each has 40 so math has 120 120*25=3000 for physics is 4*40 so 160 160*20=3200 9800-3000-3200=3600 3*40=120 3600/120=30

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Eloise scored a total of 268 points during the basketball season. Of her total points, l points came from left handed shots. She

Naddik [55]

Answer:

$\bold{268=225+}l$

Step-by-step explanation:

Given that:

Total points scored in basketball season, T = 268

Points scored from right handed shots, R = 225

Points scored from left handed shots = $l$

To find:

To write an equation to describe the situation and find the value of $l$ for left handed shots ?

Solution:

We know that the points can be scored in basketball either by right hand shots or by left hand shots.

In other words, we can say that:

Total points scored in basketball season = points scored from right handed shots + points scored from left handed shots

i.e.

$T = R + l\\\Rightarrow \bold{268=225+}l$

So, the equation is:

$\bold{268=225+}l$

Now, let us find the value of $l$ from the above equation:

$l=268-225\\\Rightarrow \bold{l = 43}$

Number of points scored from left handed shots = <em>43</em>

8 0

3 years ago

A system of equations is shown:

Harrizon [31]

Answer:

Step-by-step explanation:

$\left\{\begin{array}{ccc}2x=-y+6&(1)\\-4x+3y=8&(2)\end{array}\right\\\\(1)\\-y+6=2x\qquad\text{subtract 6 from both sides}\\-y=2x-6\qquad\text{change the signs}\\y=6-2x\\\\\text{substitute it to (2):}\\\\(2)\\-4x+3(6-2x)=8\qquad\text{use the distributive property}\\-4x+(3)(6)+(3)(-2x)=8\\-4x+18-6x=8\qquad\text{subtract 18 from both sides}\\-10x=-10\qquad\text{divide both sides by (-10)}\\x=1\\\\\text{put the value of x to (1):}\\\\y=6-2(1)\\y=6-2\\y=4$