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pentagon [3]
3 years ago
9

An expression is shown.2 3/4 x 2/3What is the value of the expression?​

Mathematics
1 answer:
Novay_Z [31]3 years ago
5 0

Answer:

The answer is 1 5/6

Step-by-step explanation:

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What is the solution to the system of equations?<br><br> y = –5x + 3<br><br> y = 1
Alinara [238K]
Ok so we know that y=1 so we can simply sub in the value of y into the equation :

y = -5x +3

1 = -5x +3

Move the -5x to the LHS ( Left-hand-side ) therefore it changes sign as well move 1 to the RHS ( Right-hand-side ) it also changes sign.

5x = 3 - 1

5x = 2

x = 2/5

x = 0.4

Hope this helps :).
7 0
3 years ago
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A bit stuck on how to do this
Helen [10]

Answer:

x = 40°

Step-by-step explanation:

Two sides are the same length, so the angles opposite them are the same size.

The sum of the angles = 180°. One angle is 100°, so the sum of the remaining two angles is 80°.

Since the remaining two angles are congruent, each is 40°.

8 0
3 years ago
There was 145 children that went to the park today and 60% of the children were boys. How many of the children were girls at the
Irina18 [472]

First find 60% of 145 =

60% of 45 equals 87.

Now subtract 87 from 145.

145 - 87 = 58

So there were 58 girls.

7 0
2 years ago
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Find the absolute maximum and absolute minimum values of f on the given interval. (If an answer does not exist, enter DNE.)
vodka [1.7K]

Answer:

absolute max is 120 and absolute min is -8

Step-by-step explanation:

Find critical numbers

f'(x) = 3x^2 - 12x + 9 = 0

= 3(x^2 - 4x + 3) = 0

3(x-3)(x-1) = 0

(x-3) = 0 or (x-1)=0

x = 1,3

Test them!

x<1     Sign of f' on this interval is positive

1<x<3 Sign of f' on this interval is negative

x>3    Sign of f' on this interval is positive

f(x) changes from positive to negative at x = 1 which means there is a relative maximum here.

f(x) changes from negative to positive at x = 3 which means there is a relative minimum here.

Test the endpoints to find the absolute max and min.

f(-1) = -8

f(1) = 12

f(3) = 8

f(7) = 120

The absolute maximum value of f is 120 and the absolute minimum value of f is -8.

7 0
3 years ago
A right triangle has a height of 12 and a width of 5. How long is the diagonal?
Dafna1 [17]
Using Pythagoras:

12^2+5^2= 144+25=169

√169= 13
7 0
3 years ago
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