Answer:
i have the Sam question i need help with
Answer: D. 9.2 m
The angle of elevation of a ladder leaning against a wall is 60º and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is:____________A. 2.3 mB. 4.6 mC. 7.8 mD. 9.2 m
Step-by-step explanation:
Given;
Angle of elevation A= 60°
Distance from the foot of the ladder to the wall x= 4.6m
Length of the ladder = L
CosA = adjacent/hypothenus = x/L
L = x/cosA
L = 4.6/cos60°
L = 9.2m
The length of the ladder is 9.2m
mixed fraction
Step-by-step explanation:
Decimal Form: 16.666667
-0.75-(-2/5) + 0.4 + (-3/4)
Simplify it :-)
-0.75 +

+ 0.4 -
Add the like terms / add your decimals with your decimals & your fractions with your fractions.
(-0.75 + 0.4) + (

-

)
Simplify :-)
0.35 + (

-

)
Simplify :-)
0.35 + (-

)
Now you turn your decimal into a fraction.
0.35 = 35/100 = 7/50
NEW PROBLEM :

+

= ??
Make both denominators 100.

×

= 14 / 100
7/20 × 5/5 = 35/100
NEW PROBLEM :

+

=

:-)
Let's go through each answer.
A.
Answer: The amount left over was 4.05 L.
Estimation: 3.15 + 4.75 is about 7.
7 L – 4 L = 3 L
The amount left over was about 3 L.
This is incorrect because 3.15+4.75 is closer to 8 than 7.
B.
Answer: The amount left over was 3.95 L.
Estimation: 3.15 + 4.75 is about 8.
8 L – 4 L = 4 L
The amount left over was a little less than 4 L.
This is correct because 3.15+4.75 is close to 8 and to find the amount left over you do have to subtract.
The correct answer is B.
Answer: The amount left over was 3.95 L.
Estimation: 3.15 + 4.75 is about 8.
8 L – 4 L = 4 L
The amount left over was a little less than 4 L.
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