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3 years ago

What is 4p + 5q = - 18 and 3p - 10q = 69 using elimination

1 answer:

8 0

$\left \{ {{4p+5q=-18\ |\cdot2} \atop {3p-10q=69}} \right. \\\\ \left \{ {{8p+10q=-36} \atop {3p-10q=69}} \right. \\+-----\\\\11p=33\ \ \ \ |:11\\p=3\\\\4\cdot3+5q=-18\\12+5q=-18\\5q=-18-12\\5q=-30\ \ \ \ \ \ |:5\\q=-6\\\\ \left \{ {{p=3} \atop {q=-6}} \right.$

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What is the largest number you can form from the numbers $2,5,8,9,10$ and the operations $\times,+,+,-$, and exactly one pair of

Levart [38]

Answer:

The largest number is 218.

Step-by-step explanation:

The given numbers are 2,5,8,9,10, given operations are ×,+,+,- and exactly one pair of parentheses.

We need to find the largest number which can be form by using given information.

We know that multiplication of two lager numbers is greater than their addition.

We need to multiply 10 and sum of 9,8,5. To get the largest number we have subtract the smallest number.

So, the largest possible number is defined by the expression

$10\times (9+8+5)-2$

$10\times (22)-2$

$220-2$

$218$

Therefore, the largest number is 218.

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3 years ago

Please help with the picture below

elena-s [515]

Answer:

Step-by-step explanation:

Remark

The angles are marked as alternate interior angles. To be parallel, they must be equal. In other words x - 20 must equal 52. That's all you have to do. Just equate the 2 givens and solve.

Givens

x - 20 is one angle

52 is the other.

Solution

x - 20 = 52 Add 20 to both sides.

x - 20 + 20 = 52 +20 Combine

x = 72

Answer: C

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3 years ago

Identify the sequence as arithmetic, geometric, or neither. Explain your answer.

Vladimir79 [104]

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4 years ago

What is 8.545 kilograms rounded to the nearest hundredth?

ohaa [14]

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4 years ago

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Answer:

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Step-by-step explanation:

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4 years ago

Read 2 more answers