Tulong po please pang grade 7 po
2 answers:
1.)
Add the numbers
<h3>Answer: 42</h3>2.)
Keep the sign of the number with the larger <u>absolute value</u><u> </u>and subtract the smaller absolute value from the larger
Subtract the numbers
<h3>Answer: 12</h3>3.)
When there is an + in front of an expression in parentheses, the expression remains the same
Subtract the numbers
<h3>Answer: 6</h3>4.)
When there is an + in front of an expression in parentheses, the expression remains the same
Calculate the difference
<h3>Answer: -52</h3>5.)
The sum of two <u>opposites</u> equal 0
<h3>Answer: 0</h3><h2><em>The Other Answer Is In The Comment</em></h2>You might be interested in
Answer:
83.6155156
Step-by-step explanation:
You can see the trapezoid in the attached picture.
The data given in the problem are:
KF = 10
LK // MF
A(KLMF) = A(FMN)
We know that KLMF is a parallelogram because:
LM // KF (bases of the trapezoid)
LK // MF (hypothesis).
The area of a parallelogram is given by the formula:
A(KLMF) = b × h
= KF <span>× h</span>
= 10 × h
The area of a triangle is given by the formula:
<span>A(FMN) = (b × h) / 2
= (FN </span>× h) / 2
The problem states that the two areas are congruent, therefore:
A(KLMF) = <span>A(FMN)
</span>10 × h = FN <span>× h / 2
10 = FN </span><span>/ 2
FN = 20
Therefore we can calculate:
KN = KF + FN = 10 + 20 = 30
Hence, KN is 30 units long.</span>
The data given in the problem are:
KF = 10
LK // MF
A(KLMF) = A(FMN)
We know that KLMF is a parallelogram because:
LM // KF (bases of the trapezoid)
LK // MF (hypothesis).
The area of a parallelogram is given by the formula:
A(KLMF) = b × h
= KF <span>× h</span>
= 10 × h
The area of a triangle is given by the formula:
<span>A(FMN) = (b × h) / 2
= (FN </span>× h) / 2
The problem states that the two areas are congruent, therefore:
A(KLMF) = <span>A(FMN)
</span>10 × h = FN <span>× h / 2
10 = FN </span><span>/ 2
FN = 20
Therefore we can calculate:
KN = KF + FN = 10 + 20 = 30
Hence, KN is 30 units long.</span>