2 years ago

Let’s go I need help on number 9 I’ll give you brainliest

Mathematics

1 answer:

Nitella [24]2 years ago

4 0

Answer is 24. Hopefully your talking abt the one that starts with (-5)

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One crew can seal a parking lot in 8 hours and another in 10 hours. How long will it take to seal the parking lot if the two cre

Mariana [72]

I want to say 6 but i am only 70% shure

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2 years ago

Find the area, in square feet, of a triangle whose base is 42⁄3 feet and whose altitude is 84⁄7 feet. A. 135⁄21 B. 20 C. 40 D. 2

CaHeK987 [17]

Answer:

Option B. $20\ ft^{2}$

Step-by-step explanation:

we know that

The area of a triangle is equal to

$A=\frac{1}{2}bh$

we have

$b=4\frac{2}{3}\ ft$

$h=8\frac{4}{7}\ ft$

Convert mixed numbers to an improper fractions

$b=4\frac{2}{3}\ ft=\frac{4*3+2}{3}=\frac{14}{3}\ ft$

$h=8\frac{4}{7}\ ft=\frac{8*7+4}{7}=\frac{60}{7}\ ft$

substitute the values

$A=\frac{1}{2}(\frac{14}{3})(\frac{60}{7})\\ \\A=\frac{14*60}{2*3*7}\\ \\A=\frac{840}{42} \\ \\A=20\ ft^{2}$

5 0

2 years ago

Read 2 more answers

Determine if the two triangles are congruent if they are state how do you know SSS,SAS,HL,ASA, OR AAS. Be sure to include any ex

dlinn [17]

1: yes AAS
2: yes SSS reflective
3: yes ASA
4: yes HL reflective
5: no SSA vertical
6: yes SAS vertical

Not sure on vocabulary for 1 and 3 sorry:(

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2 years ago

Which value is the solution to the equation -8 = 6 - 7x? A. -7 B. - 2 C. 2 D. 5

r-ruslan [8.4K]

Step-by-step explanation:

the answer is c: 2..............

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2 years ago

Simplify. 2u? - 20u +42 u² – 5u+6

chubhunter [2.5K]

Answer:

The simplified expression is:

$\frac{2(u + 7)}{(u- 2)}$

Step-by-step explanation:

We want to simplify:

$\frac{2 {u}^{2} - 20u + 42}{ {u}^{2} - 5u + 6}$

We factor the numerator and the denominator to get:

$\frac{2(u - 3)(u + 7)}{(u- 2)(u- 3)}$

Cancel out u-2 which is common to the numerator and the denominator yo get:

$\frac{2(u + 7)}{(u- 2)}$

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2 years ago