MATHEMATICS MIDDLE SCHOOL

What is the chemical basis of a gene?
A.carbohydrate
B.Protein
C.DNA
D.lipid

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

a gene is what is in you so it starts with DNA

Answer 2

Answer: The answer to ur question is C

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-3 + x2 = -19 does x = 4

Answers

The equation given in the question is written below
- 3 + x^2 = - 19
x^2 = - 19 + 3
x^2 = - 16
x^2 = - (4)^2
Then
x = - 4
So we can see from the above deduction that x is equal to -4 and not +4. I hope the procedure is clear enough for you to understand. You can always use this method for solving problems of similar kind without requiring any help from outside. Only be careful about the calculation part of the problem given.

Evaluate each expression if a= $(7)/(8)$ , b = - $(7)/(16)$ , c = 0.8, d = $(1)/(4)$ 1) $(a)/(b)$ - c + d

Answers

Answer:−357/640

Step-by-step explanation:

it's the answer I thinl

7/8 • (- 16/7)= -2
-2-4/5+1/4= -2 11/20 or -2.55

Consider solving the equation for x.3(3x + 4) - 5 = ax + b
Which statements are true about the solution to the equation when substituting values for a and b as specified?
Select all that apply.

A. If a=−3 and b=4 , then there is exactly one solution to the equation.
B. If a=−9 and b=13 , then there is no solution to the equation.
C. If a=9 and b=−2 , then there is no solution to the equation.
D. If a=−3 and b=−5 , then there are infinitely many solutions to the equation.
E. If a=9 and b=7 , then there is exactly one solution to the equation.

Answers

Answer:

A. If a=−3 and b=4 , then there is exactly one solution to the equation.

C. If a=9 and b=−2 , then there is no solution to the equation.

Step-by-step explanation:

The given equation is

$3(3x+4)-5=ax+b$

To solve for $x$ , we need to use the distributive property

$3(3x+4)-5=ax+b\n9x+12-5=ax+b\n9x-ax=b-7\nx(9-a)=b-7$

To find the right statement, we need to the given values.

For a=-3 and b=4,

$x(9-a)=b-7\nx(9-(-3))=4-7\nx(9+3)=-3\n12x=-3\nx=(-3)/(12) =-(1)/(4)$

So, choice A is true, because there's one solution to the equation.

For a=-9 and b=13,

$x(9-a)=b-7\nx(9-(-9))=13-7\n18x=6\nx=(6)/(18)=(1)/(3)$

The choice B is false.

For a=9 and b=-2

$x(9-a)=b-7\nx(9-9)=-2-7\n0x=-9\n0=-9$

Choice C is correct, because there's no solution, because zero is not equal to -9.

For a=-3 and b=-5

$x(9-a)=b-7\nx(9-(-3))=-5-7\n12x=-12\nx=(-12)/(12)=-1$

Choice D is false, becuase there's only one solution.

For a=9 and b=7

$x(9-a)=b-7\nx(9-9)=7-7\n0x=0\n0=0$

Choice E is false, because there are infinite solutions in ths case.

Therefore, the right choices are A and C.

So let's simplify the equation first.

9x + 12 - 5 = ax + b
9x + 7 = ax + b
9x - ax - b = 7

Alright now plug in the numbers for each option.
I don't feel like doing all of them but I did A (one solution) and B (no solution because the two 9x's cancel out).

Find the total surface area for the figure to the nearest tenth 65.3 m^2

104.6 m^2

98.2 m^2

94.4 m^2

Answers

The answer is D. 94.4^2

((Hopefully I helped))

Math Answers .if you take a test with 1 0questions and got 7 of them right,what decimal part would that be? what decimal part did you get wrong?? explain

Answers

right decimal percentage: If i take a test with 10 question and i got 7 of then right the decimal would be 0.7 in percent it would be 70%. That i your answer. (this is how much you got right.)

wrong decimal percentage: the wrong decimal percentage would be 0.3 because divide 7 by 10 and you get 0.7 and out of 10 would be 0.3, there is your answer.

I got .7 or .70 correct. Because 7/10=.70. I got .3 or .30 wrong because .70 is 70 out of 100. 100-70=30

Kayla buys a shirt for 8.19. she pays with a $10 bill. how much change should she receive? tell meh plz :D