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navik [9.2K]
3 years ago
5

Bonjour,est ce que vous pouvez me faire cette exo svp

Mathematics
1 answer:
saveliy_v [14]3 years ago
7 0
Salut. BC²=AC²-AB² , BC=√((10)²-(8)²) , BC=√(100-64) , BC=√36 , BC=6cm. J'espere t,avoir aidé
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Ill give brainliest
Rzqust [24]

Answer:

<h2>c. (0, 2)</h2>

Step-by-step explanation:

\left\{\begin{array}{ccc}m+4n=8&(1)\\m=n-2&(2)\end{array}\right\\\\\text{substitute (2) to (1):}\\\\n-2+4n=8\qquad\text{add 2 to both sides}\\5n=10\qquad\text{divide both sides by 5}\\n=2\\\\\text{put the value of}\ n\ \text{to (2):}\\\\m=2-2\\m=0

4 0
3 years ago
Without using a calculator, match each expression to the correct point.<br><br> Point<br> Expression
lyudmila [28]

Answer:

Where is the photo?

Step-by-step explanation:

7 0
2 years ago
The sum of two numbers is 87. if three times the smaller number is subtracted from the larger number the result is seven. find t
Stolb23 [73]
\left \{ {{a+b=87} \atop {a-3b=7}} \right.&#10;&#10;

a-3b=7
a=7+3b

a+b=87
(7+3b)+b=87
7+4b=87
4b=87-7
4b=80
b=20

a=7+3b
a=7+3*20
a=7+60
a=67
5 0
3 years ago
Find the sum.<br> 48 + 45 + 42+...+(-81) + (-84)
Agata [3.3K]

Answer:

look below

Step-by-step explanation:

i dont know what that +... thing is

but when youre adding the negatives youre really just adding that number so this is just

48+45+42+81+84

45+42 is 87

now we have

48 + 87 + 81 + 84

87 + 81 is 168

48 + 84 is 132

now we have

168 + 132 and that is exactly 300

again dont know what the ... is so cant help you there

4 0
2 years ago
Read 2 more answers
Select the factors of x2 - 14x + 49
marissa [1.9K]
(X-7)(x-7)
Hope this is what you're looking for!
6 0
3 years ago
Read 2 more answers
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