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Ber [7]
2 years ago
8

Please help me I’m lost

Mathematics
1 answer:
Alecsey [184]2 years ago
8 0

Answer:

look it up on google if you havent tried already. also it doesn't hurt to ask for help from someone you know.

Step-by-step explanation:

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5TH GRADE LEVEL QUESTION: Look at photo and list it step by step GIVING OUT BRAINLIEST.
jasenka [17]

Answer:

(3+4x4)-7

(3+16)-7

19-7

12

4 0
2 years ago
HELLLPPPPP ASAAAAAAPPP
Sladkaya [172]
I think it’s 22.... I just plugged five into the equation
7 0
3 years ago
Margaret and Donovan are twins. They have each kept track of their heights every year since they were 5.
guapka [62]

Answer: Margret grew faster than donovan

Step-by-step explanation:

5 0
2 years ago
(2x^2-4x+8)+(3x^2+15x-12)
Neko [114]

Answer:

5x2+11x−4

Step-by-step explanation:

=2x2+−4x+8+3x2+15x+−12

Combine Like Terms:

=2x2+−4x+8+3x2+15x+−12

=(2x2+3x2)+(−4x+15x)+(8+−12)

=5x2+11x+−4

have a great weekend <3

6 0
2 years ago
Read 2 more answers
The​ half-life of a certain substance is 26 years. How long will it take for a sample of this substance to decay to 92​% of its
Nana76 [90]

Answer:

t= 3.1 years

Step-by-step explanation:

A = A_0 e kt

Half life(1/2) = 26 yrs

1/2 = 1_0 e^k.26

ln(1/2) = ln(e^26k)

26k. ln(e) = ln(1/2)

k = 1/26* ln(1/2)

k = -0.0267

A = A_0 e^kt

0.92 = 1.e^(-0.0267)t

ln(0.92) = ln(e^(-0.0267)t

-0.0267t .ln(e) = ln(0.92)

t = ln(0.92) / -0.0267

t = 3.122

t = 3.1years (approximate to 1 d.p)

3 0
3 years ago
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