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Alinara [238K]
3 years ago
11

Solve a quadratic equation by factoring j2–30j=0

Mathematics
1 answer:
Lina20 [59]3 years ago
4 0

Answer:

j = 0  or j = 30

Step-by-step explanation:

j² - 30j = 0

Factorise j out of both terms on the left side.

j (j-30) = 0

Apply zero product rule.

j = 0  or j-30 = 0

Find the value of j.

j = 0  or j = 30

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Halp idk what I'm doing I thought it was sinx=6/20
FromTheMoon [43]

You need to mutiply 6 by 20, then you need to devide what you got by 2.

looks like this. length times hight, devided by 2.

8 0
4 years ago
a freight elevator CAN safely hold no more than 2000 Pound. an elevator operator must take 55lb boxes to a storage área. if he w
BARSIC [14]

Answer:

33 boxes.

Step-by-step explanation:

We have been given that a freight elevator can safely hold no more than 2000 pound. Weight of elevator operator is 165 pound. Weight of each box is 55 pound.

Let n be number of boxes. We will write an inequality as weight of elevator operator and weight of all boxes should be no more than 2000 pound.

55*n+165\leq 2000

Now we will solve our inequality to find number of boxes that could be moved safely at one time.

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n\leq \frac{1835}{55}

n\leq 33.363636

Therefore, 33 boxes can be moved safely at one time.  


8 0
3 years ago
At a baseball game, a vender sold a combined total of 104 sodas and hot dogs. the number of sodas sold was three times the numbe
Reil [10]
You have to set up a system of equations

x+y=104
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Sodas = 78
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7 0
4 years ago
What is the image of the point (-6,-3) after a rotation of 180^{\circ}180 ∘ counterclockwise about the origin?
babunello [35]

Answer:

(6,3)

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Please answer this multiple choice question!
Bond [772]

Answer:

  d. 11.3 cm

Step-by-step explanation:

The radius of the circle is the length CP, which can be found using the Pythagorean theorem. Since CQ ⊥ PR, you know that Q is the midpoint of PR and PQ = 8 cm.

Then the Pythagorean theorem tells you ...

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  CP = √128 cm = 8√2 cm

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7 0
3 years ago
Read 2 more answers
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