Answer:
The amount of time spent can be modeled as 1.25h
Step-by-step explanation:
In order to do this, we need to take an extra .25h added to the h he planned on already spending. When we add these two together, we get 1.25h, which is the model for the sentence.
Option B,C and D are correct.
Step-by-step explanation:
We need to determine which statements are true about ![2gh-(3+7)+\frac{x}{4}](https://tex.z-dn.net/?f=2gh-%283%2B7%29%2B%5Cfrac%7Bx%7D%7B4%7D)
Checking the options:
The term x/4 is quotient of 2 variables is not true.
2gh-(3+7) is the difference of two terms is true
Co-efficient of the expression are 2 and 1/4 is true because, co-efficient are terms that comes with variables.
The expression 3+7 is sum of two numbers is also true.
Option B,C and D are correct.
Keywords: Solving Equations
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Answer:
EF is 1.98
Explanation:
For right triangles, you solve for sides and angles using the trig. ratios. You remember then with the acronym SohCahToa.
It is read as:
<u>S</u>ine is <u>o</u>pposite over <u>h</u>ypotenuse.
<u>C</u>osine is <u>a</u>djacent over <u>h</u>ypotenuse.
<u>T</u>angent is <u>o</u>pposite over <u>a</u>djacent.
Which side is opposite or adjacent depends on which angle is the angle of reference, the angle you are talking about. The adjacent side touches the angle of reference.
In this problem, angle D can be the angle of reference.
Since we know DF the hypotenuse, and we are looking for EF, the opposite side, we should use the Sine ratio.
sin D = sin 26° ≈ 0.44
sin D = EF/DF = EF/4.5
Substitute sinD for 0.44 and then isolate EF.
0.44 = EF/4.5
0.44(4.5) = EF Multiply both sides by 4.5
EF = 1.98
The measurement of EF is 1.98.
Over estimated because the exact answer is 2.6.