MATHEMATICS MIDDLE SCHOOL

Find the unit rate of lisa walked 48 blockes in 3 hours how many blocks did she walk per hour

Answers

Answer 1

Answer:

48/3= 16

16 blocks per hour

# of blocks walked/ time it took her to walk those blocks

Answer 2

Answer:

first take 48 blocks and divide it by the 3 hours : 48 divided by 3; and you get 16 so 16 is your answer

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Which is greater 7/8 or 0.95?

Answers

.95

7/8= .875 so obviously .95 is bigger

7/8=0.875 (f you divide the top of the fraction by the bottom of the fraction you can convert it into a decimal)
by doing this you can now easily compare the two decimals. after comparison, you can see that 0.95 is greater by 0.075

What is the percentage of error in weight if measured weight is 22 pounds and actual weight is 25 pounds

Answers

The percent error is by 12%

The percent error is calculated by subracting the actual weight from the estimated weight and then dividing it by the actual value and multiplying it by 100% in absolute value(Which means to remove any negative sign)

A map has a scale of 1 centimetre to 6 kilometresthe road from ridlington to cambridge measured on the map is 6.6 cm

what is the length in kilometeres

Answers

the answer is 39.6 because 1 cm=6 km and 6 cm x 6.6 cm= 39.6 km hope i got it right good luck!! sincerely TorKent10

What are the solutions of this system of equationThe first three steps in determining the solution set of the
system of equations algebraically are shown in the table.
y = -x2 +2x - 9
y = -6x + 6
(5,-24) and (3, -12)
(5,36) and (3, 24)
(-5, -24) and (-3, 12)
(-5, 36) and (-3, 24)
Step
Equation
-x² + 2x -9 = -6x + 6
0 = x2 – 8x+15
0 = (x - 5)(x-3)
2
Mark this and retum
Save and Exit
Sumber
ere to search
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Answers

Answer:

(3,-12) and (5,-24)

Step-by-step explanation:

Given the system of two equations

$\left\{\begin{array}{l}y=-x^2+2x-9\n y=-6x+6\end{array}\right.$

Equate right sides of these two equations:

$-x^2+2x-9=-6x+6$

Rewrite this equation:

$-x^2+2x-9+6x-6=0\n \n-x^2+8x-15=0\n \nx^2-8x+15=0\n \nx^2-5x-3x+15=0\n \nx(x-5)-3(x-5)=0\n \n(x-3)(x-5)=0\n \nx_1=3\ \text{or}\ x_2=5$

If x=3, then

$y=-6\cdot 3+6=-18+6=-12$

If x=5, then

$y=-6\cdot 5+6=-30+6=-24$

You get two solutions (3,-12) and (5,-24)

The solution set of the system of equation is (5, -24) and (3, -12)

System of equations

The given systen of equation is one linear and one quadratic. Given the syatem of equations

$y = -x^2 +2x - 9\ny = -6x + 6$

Equating bothequations will give

$-x^2 + 2x - 9 = -6x+ 6$

Equate to zero

$-x^2 + 2x - 9 + 6x - 6 =0\nx^2 - 2x +9 - 6x + 6 = 0\nx^2 - 8x + 15 = 0$

Factorize

$x^2 - 3x - 5x + 15 = 0\nx(x-3)-5(x-3) = 0\nx-5 = 0 \ and \ x - 3 = 0\nx = 5 \ and \ 3$

Recall that ;

y = -6x + 6

If x = 5

y = -30 + 6

y = -24

If x = 3

y =-6(3) + 6

y = -12

Hence the solution set of the system of equation is (5, -24) and (3, -12)

Learn more on system of equation here: brainly.com/question/25976025

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What is the graph of the equation x=-3

Answers

It should be a straight vertical line moved to the left by 3.

Find the measure of angle x in the figure below:A:35
B:48
C:69
D:78

Answers

The best way to solve for x is to first solve for y and then subtract values. The top of "line" of the 3 angles togethers add up to 180 degrees. So from this, you can deduct this equation into $52+59+y=180$ . To solve for y, subtract $52$ and $59$ from the left hand side and rights hand side of the equation. now you know the value is $y=180-52-59=69$ . So the value of y is 69 degrees.
Now you know two angles of a triangle and the sum of the angles in a triangle is 180 degrees. So the equation is $x+69+63=180$ . To solve for x, subtract $69+63$ from both sides. $x=180-69-63=48$ . So you know that $x=48$ degrees.

Answer:

the answer is b X=48 degrees

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