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Zinaida [17]
3 years ago
5

Help please!! If you can't see the photo well just let me know <3​

Mathematics
1 answer:
Sveta_85 [38]3 years ago
8 0

Answer: The second one and fourth one.      

Step-by-step explanation: did this already and got it right :)

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You can mow one acre in 126 minutes. i can mow one acre in 117 minutes. how long will it take you to mow a 0.17-acre lawn? 13 in
Morgarella [4.7K]

a) (0.17 ac)×(126 min/ac) = 21.42 min

b) I can mow 1/126 ac/min; you can mow 1/117 ac/min. Together, we can mow at a rate that is the sum of these:

... (1/126 + 1/117) ac/min = (117 + 126)/(126×117) = 243/14,742 ac/min

Then it will take 14,742/243 min/ac × 0.17 ac/lawn ≈ 10.31 min/lawn

5 0
3 years ago
A number is added to the square of itself and the result is 90. Find all possible values for the number
kolezko [41]

Answer: 9

Step-by-step explanation: 9 x 9 equals 81 and 81 add 9 is 90

6 0
3 years ago
Which expression is equal to 5^4 x 5^8 ? <br><br> A: 5^12<br> B: 5^4<br> C: 5^2<br> D: 5^−4
galben [10]

Something to remember is how to multiply terms with same bases, but different exponents:

a^b \cdot a^c = a^{(b+c)}


Essentially, we add the exponents.


Using the information above, we can find our answer:

5^4 \cdot 5^8 = 5^{(4+8)} = \boxed{5^{12}}


Our answer is \boxed{5^{12}}, or A.

6 0
3 years ago
Read 2 more answers
Help pls!!!! ASAPPPPPP
s344n2d4d5 [400]

Answer:eht sistep 2 and step 4 is the correct answer

Step-by-step explanation:

7 0
2 years ago
The difference of the square of a number and 18 is equal to 3 times that number. Find
ololo11 [35]

Answer:

6.

Step-by-step explanation:

To solve this, you can set up an equation as such:

x²-18= 3x

Now, rearrange this to make it an equation in standard form:

x²-3x-18=0.

Simply turn this equation into factored form:

(x-6)(x+3)= 0.

The only positive solution here is x=6.

7 0
4 years ago
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