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qwelly [4]
3 years ago
15

ASAP!Please help and explain, thanks in advance :)

Mathematics
1 answer:
Afina-wow [57]3 years ago
5 0
5+0.30(5)+0.40(2)=7.30.
That’s mean answer is $7.30.
I hope that’s was helpful to you.
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Please help me figure this out for me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
nordsb [41]

Pretty sure its B but if im wrong please dont be mad.

7 0
3 years ago
If the base of a triangle is 20mm and the area of the triangle is 40m2. then what will be the height and how can we find it​
Eddi Din [679]

Use the formula for area of a triangle:

Area = 1/2 x base x height.

Fill in what you know:

40 = 1/2 x 20 x height

Multiply both sides by 2:

80 = 20 x height

Divide both sides by 20

Height = 4 m

3 0
3 years ago
Read 2 more answers
35 km<br> 21 km<br> b<br> What is the length of the missing leg?<br> b =<br> kilometers
marta [7]

Answer:

28 km

Step-by-step explanation:

One leg = 35 km

Second leg = 21 km

We need to find the length of the missing leg. Using Pythagoras theorem, we  can find it.

Hypotenuse² = base² + perpendicular²

x=\sqrt{35^{2}-21^{2}}\\\\x=28\ km

So, the length of the missing leg is equal to 28 km.

3 0
3 years ago
A+4b=-4 a+10b=-16<br>how to solve this problem ​
UNO [17]

Answer:

a,b=4,-2

Step-by-step explanation:

Subtract:

a-a+4b-10b=-4-(-16)

-6b=-4+16

-6b=12

b=-2.

Plug in:

a+4(-2)=-4

a-8=-4

a=4.

Hope this helps plz hit the crown :D

7 0
3 years ago
Jessie is completing a mental rotation experiment. her reaction time will be fastest when the objects are rotated: 120 degrees.
MatroZZZ [7]
<span>60 degrees it will take you longer to rotate this physical object by 180 degrees than to rotate it 90 degrees. your mental image should operate the same way the physical objects operate. then it will take you longer to rotate the mental image 180 degrees then rotate it 90 degrees. the dependent variable was reaction time not accuracy.</span>
8 0
4 years ago
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