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Aliun [14]
3 years ago
11

7th grade math help me plzzz

Mathematics
2 answers:
Lemur [1.5K]3 years ago
7 0

Answer:

3.a) -7 + 3

3.b) 4

I hope this helps!

murzikaleks [220]3 years ago
5 0

Answer:

a. -7 + 3

b. draw 7 negatives + 7 positives

Step-by-step explanation:

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This one is pretty easy, i just forgot how to do it.
Solnce55 [7]
No,
one of the 3 sides need to be 90
3 0
2 years ago
Question. 1 :
vovikov84 [41]
<h3>Answer to Question 1:</h3>

AB= 24cm

BC = 7cm

<B = 90°

AC = ?

<h3>Using Pythagoras theorem :-</h3>

AC^2 = AB^2 + BC ^ 2

AC^2 = 24^2 + 7^2

AC^2 = 576 + 49

AC^2 = √625

AC = 25

<h3>Answer to Question 2 :-</h3>

sin A = 3/4

CosA = ?

TanA = ?

<h3>SinA = Opp. side/Hypotenuse</h3><h3> = 3/4</h3>

(Construct a triangle right angled at B with one side BC of 3cm and hypotenuse AC of 4cm.)

<h3>Using Pythagoras theorem :-</h3>

AC^2 = AB^2 + BC ^ 2

4² = AB² + 3²

16 = AB + 9

AB = √7cm

<h3>CosA = Adjacent side/Hypotenuse</h3>

= AB/AC

= √7/4

<h3>TanA= Opp. side/Adjacent side</h3>

=BC/AB

= 3/√7

4 0
2 years ago
Help me plzzzzzzzzzzzz
jasenka [17]

Answer:

1. 10x^2 -4

2. 2a^5 + 5b

Step-by-step explanation:

1. Simplify 4(x^2 -1) to 4x^2 -4

then add that to 6x^2

2. 4a^5 - 2a^5 = 2a^5 and

4b+b = 5b

6 0
3 years ago
Read 2 more answers
PLEASE HELP! WILL GIVE BRAINLIEST
kiruha [24]

Answer:

73

Step-by-step explanation:

Angle JID is supplementary to Angle JIH so:

180- Angle JIH= Angle JID

180-107=73

Angle JID is opposite to Angle AJF(angle x)

Opposite angles are always equal

Angle JID=Angle AJF(x)

73=Angle AJF(x)

8 0
3 years ago
Read 2 more answers
Vera already owns 10 necklaces, and additional necklaces are priced at 2 for a dollar. How much money does Vera need to spend on
Llana [10]

Vera has 5 pairs of necklaces and wants to own 22 pairs. That means she needs to purchase 17 pairs at $1 per pair.

Vera needs to spend $17.

7 0
3 years ago
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