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laiz [17]
3 years ago
8

Can someone help me on 13 Plz

Mathematics
2 answers:
Ad libitum [116K]3 years ago
7 0
10(3) + 3 = 33 times in 2 minutes
10(120) + 3 = 1203 times in 2 hours
Phoenix [80]3 years ago
6 0
What we know :
After m minutes, and adult blinks about 10m+3 times.
1 hour= 60 minutes

What we need to find:
About how many times does an adult blink in 3 minutes? In 2hours?

m=3
f (m)=10m+3
f (3)=10 (3)+3
=30+3
=33
An adult blinks 33 times in 3 minutes

2hours=2×60=120minutes

f (120)=10 (120)+3
=1200+3
=1203

An adult blinks 1203 times in 2 hours.
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What is the sum of r + s when r = –17.6 and s = 12.2? A. –29.8 B. –5.4 C. 5.4 D. 29.8
tankabanditka [31]
C. -5.4 -17.6+12.2= -5.4 because -17.6 goes first in the calculator but also its a negative
8 0
3 years ago
Find the height of a triangle with an area (A) of 35 square inches and base of 7 use the formula A= 1/2bh
slega [8]

Answer:

D. 10

Step-by-step explanation:

Since you divided by 2. You want to multiply to go back wards.

35×2=70

They already give you base(b=7) so to find the height you need to divide to go backwards since you multipled bh.

70÷7=10

now plug it in to see if the equation is right.

35= 1÷2 (7×10)

5 0
3 years ago
What is the greatest common factor of the expression 12x4+18x2
Nata [24]

Answer:

84

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
If F(x) = log 5 2x, find F^-1(x). a. 5^y=2x b. 5^2y=x c. y = (5^x)/2
gregori [183]

Answer:

y = \frac{5^{x} }{2}

Step-by-step explanation:

y = log 5 2x

inverse ------> y=x

x = log 5 2y

5^{x} = 2y

y = \frac{5^{x} }{2}

4 0
3 years ago
The equation (2x^2 - 1)(3x+2) = (2x²)(3x) + (2x²)(2) + (-1)(3x)+(-1)(2) is an example
Nookie1986 [14]

The method used is Distributive Property.

<h3>What is Distributive property?</h3>

The Distributive Property is an algebraic property that is used to multiply a single value and two or more values within a set of parenthesis.

Given:

(2x² - 1)(3x+2) = (2x²)(3x) + (2x²)(2) + (-1)(3x)+(-1)(2)

Here the property used is Distributive property.

Because distributive property in this way

a*(b+c)= a*b+ a*c

This is how a is being multiplied by with b and c.

Learn more about this Distributive property here:

brainly.com/question/4136433

#SPJ1

8 0
2 years ago
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