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2 years ago

Anyone that can help me with this?

Mathematics

2 answers:

Flauer [41]2 years ago

8 0

Okay. 10×5=50cm^2 is the area of the rectangle
The height of the triangle is (18-10)=8cm
So (8×5)÷2=20cm^2
50+20=70cm^2 is the area of the composite shape

Galina-37 [17]2 years ago

8 0

The answer is b. I hoped it helped

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100 POINTS HELP ASAP Linear Combination

notka56 [123]

Answer:

1) $x=\dfrac12$

2) $n = -3 \ \ \textsf{and} \ \ m = -4$

3) see below

4) A: 0 = 1

Step-by-step explanation:

Question 1

$15-0.5(4x-2)+4x=17$

$\implies 15-2x+1+4x=17$

$\implies 2x+16=17$

$\implies 2x=1$

$\implies x=\dfrac12$

Question 2

$\textsf{rearrange} \ n=m+1 :$

$\implies -m=-n+1$

$\textsf{add equations} \ -m=-n+1 \ \textsf{and} \ m=2n+2:\\$

$\implies0=n+3$

$\implies n=-3$

$\textsf{substitute} \ \ n=-3 \ \ \textsf{into} \ \ m=n-1:$

$\implies m=-3-1$

$\implies m=-4$

Question 3

subtract the second equation from the first

divide both sides by -4

substitute found value for y into first equation

solve for x

Question 4

$3j=k$

$k=3j+1$

$\textsf{rearrange} \ 3j=k :$

$\implies -k=-3j$

$\textsf{add equations}\ -k=-3j \ \ \textsf{and}\ \ k=3j+1:$

$\implies 0=1$

Solution = A

6 0

2 years ago

The diameter of a circle is 222 units. What is the radius of the circle? units

cricket20 [7]

Answer:

111

Step-by-step explanation:

divide by 2 to find the radius

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1 year ago

Samuel bought 32 and 1/2 ft of window trim at a hardware store the trim cost $1.75 per foot including sales tax if Samuel paid w

Sergio [31]

Answer:

The amount of change he should received is

$100 - $56.875

= $43.125

= $43.13

Step-by-step explanation:

Length of window trim = 32 and 1/2 ft

Cost per foot = $1.75

Amount paid = $100

Total cost of window trim = 32.5×1.75 = $56.875

The amount of change he should received is

$100 - $56.875

= $43.125

= $43.13

8 0

3 years ago

Please let me know the explanation of the the answer u will tell for this Question..

attashe74 [19]

$\huge \purple{\tt{Answer:}}$

Area of square = (length)²

$= \sf {(3{\dfrac{1}{2}})^2} \\\\\ = \sf {12.25~cm^2}$

$\sf{12{\dfrac{1}{4}}}$

7 0

2 years ago

PLS HELP NEED ANSWERS QUICK WILL GIVE BRAINLIEST

yawa3891 [41]

Answer:

a- 10x^2 - 4x + 12

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Step-by-step explanation:

m6th w6y

BRAINLIEST??

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2 years ago