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Nataly_w [17]
3 years ago
6

Factorise the following:x²-7x-30​

Mathematics
1 answer:
Anna35 [415]3 years ago
3 0

Answer:

x²-(10-3)x-30

x²-10x-3x-30

x(x-10)-3(x-10)

(x-3)(x-10)

Step-by-step explanation:

I hope this helps! Stay safe <3

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Find the measure of M
Neporo4naja [7]

Answer:

∠M = 78º

∠N = 68º

∠P = 34º

Step-by-step explanation:

we know that the inside of a triangle is equal to 180º. we also know that angle p and angle q equal 180º when added together because that's the angle of a straight line. first we need to find angle p.

180 - 146 = 34º

now we can set it up so that all the angles equal 180º when added together.

(5y + 3) + (4y + 8) + 34 = 180

5y + 4y = 9y

9y + 3 + 8 + 34 = 180

3 + 8 + 34 = 45

9y + 45 = 180

    -45      -45

-------------------

9y = 135

÷9      ÷9

y = 15

now we can plug 15 in for y

(5 x 15 + 3) = 78º

(4 x 15 + 8) = 68º

to double check, add all three angles and make sure they equal 180º

78 + 68 + 34 = 180

7 0
3 years ago
I’m stuck lol pls help
GarryVolchara [31]

Answer:

x=90

Step-by-step explanation:

So, since x-20 is the vertical angle directly near 70, we can say:

x-20=70.

if we solve x is 90.

HOPE IT HELPS!!!!!!!!!!!

4 0
3 years ago
Let GCF(a, b) be the abbreviation for the greatest common factor of a and b, and let LCM(c, d) be the abbreviation for the least
Monica [59]

Answer:

Answer will be 28

Step-by-step explanation:

We have to find the GCF( LCM(8,14) , LCM (7,12) )

Here GCF is stands for greatest common factor and LCM is stands for lowest common factor

Let first find LCM of (8,14)

8 = 2×2×2

14 = 2×7

So LCM will be 2×2×2××7 = 56

Now LCM of (7,12)

7 = 7×1

12 = 2×2×3

So LCM will be 2×2×3×7 = 84

Now GCF of (56,84)

56 = 2×2×2×7

84=2×2×3×7

So GCF will be 2×2×7 = 28

4 0
3 years ago
The two figures shown above are congruent. Identify the corresponding sides and angles.
nasty-shy [4]

Answer:

AB = RS , BC = SP , CD = PQ , AD = RQ

m∠A = m∠R , m∠B = m∠S , m∠C = m∠P , m∠D = m∠Q

Step-by-step explanation:

∵ ABCD congruent to RSPQ

∴ AB = RS , BC = SP , CD = PQ , AD = RQ

∴ m∠A = m∠R , m∠B = m∠S , m∠C = m∠P , m∠D = m∠Q

8 0
3 years ago
Find arc DC please help me
emmasim [6.3K]

Answer:

arc ABC = 196°

arc DC = 360 - 196 - 70 = 94°  (which looks out of proportion, but so does angle D)

Step-by-step explanation:

arc ABC = 2(∠D) = 2(98°) = 196°

3 0
3 years ago
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