3. Living things can weather and erode the Earth. Which statement is true? mN1 Point) B. Lichen secrete chemicals which cause chemical changes in rocks and cause chemical weathering, but plant roots split rocks apart through physical (mechanical) weathering, C. All living things cause chemical weathering. D. Living things only cause mechanical weathering. Answer B
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Answer 1
Answer:
The correct answer is the first option, secrete chemicals which cause chemical changes in rocks and cause chemical weathering
Solve the equations using the substitution method: 4x -2y =22 2x + 4y = 6
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we have that 4x -2y =22------> clear variable y 2y=4x-22--------> y=4x/2-22/2---------> y=2x-11-----> equation 1 2x + 4y = 6------> equation 2
substitute equation 1 in equation 2 2x+4*[2x-11]=6-----> 2x+8x-44=6----> 10x=50------> x=5 then y=2x-11----> y=2*5-11----> y=-1
Ways to subract 32-13=
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The answer is 19 and the ways are Caculator or by hand.
With a calculator or by hand.
What is the equation of a line passing through the origin with a slope of positive one?
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We are going to use the equation of a line y = mx + b. In this equation, m is the slope and b is the y-intercept.
We know from the question that the slope is 1. Therefore, m = 1. So now, our line is y = 1x + b
Then, we can use a known point on the line to find b. We know that our line passes through the origin so point (0,0) is on the line. 0 = 1(0) + b 0 = 0 + b b = 0
Therefore, the equation of the line is: y = 1x + 0 or just y = x
y=x The slope of this line is 1 (the numerical coefficient of x) and passes through the origin (if you put x=0 it gives you y=0).
mrs gannon is having her class make winter decorations using pine cones. If each decoration needs 11 pine cones and mrs gannon has 18 student in her class. How many pine cones does mrs gannon need?
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11 • 18 = 198. Mrs. Gannon should need 198 pine cones
How to do Simplification of algebraic fractions
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If we want to simplify Algebraic Fractions: We have to take a look at the numerator and the denominator Why? Because to simplify we need to have a common multiple. When we find the common multiple, we now know by which factor we have to break down the fraction in the numerator and the denominator I have some examples attached below for help.
Amanda has 10 cups of batter to make 16 cupcakes. How many cups of batter will she use for for each cupcake?
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Since Amanda will have to divide her 10 cups of batter evenly among 16 cupcake molds, each cupcake will hold 10 cups divided by 16. So, the answer is 10/16=0.625. In fractions, this will be 5/8.